Quantum International Relations: A Human Science for World Politics
By James Der Derian and Alexander Wendt
Oxford University Press, 2022
The turn of this century was marked by a series of fateful events in world politics such as the Asian financial crisis and the 9/11 terrorist attacks in the United States (and the subsequent “Global War on Terror”). As most IR scholars were rightly preoccupied with understanding such challenges, two leading IR scholars, James Der Derian and Alexander Wendt, had separately begun to cast their eyes on a rather different subject: quantum theory.
Der Derian made his first reference to quantum mechanics in his introduction to The Virilio Reader (Der Derian, 1998). In 2001, Wendt spotted a book in a Chicago bookstore remainder bin: The Quantum Society: Mind, Physics, and a New Social Vision (Zohar and Marshall, 1995). That, as Wendt (2015) wrote later on, was his “aha!” moment. These seemingly unremarkable anecdotes changed the main research trajectory of both scholars. Their initially “separate” encounters with quantum mechanics then became “entangled” as they joined forces on the broad and ambitious project of quantizing IR. One of the fitting products of this collaboration is their co-edited book Quantum International Relations: A Human Science for World Politics.
Expanding on their co-edited Special Issue “Quantizing International Relations” in Security Dialogue (Der Derian and Wendt, 2020), the book seeks to make a case for grounding the study of international relations in quantum approaches, broadly and diversely defined. Being the very first — and still probably the only — edited book dedicated to quantum IR, this volume is a truly welcome and much anticipated addition to this endeavor. Anyone who wonders about how IR can benefit from quantum perspectives should not hesitate to pick up a copy and delve into it (if they have not already done so). The reward would be an incredible intellectual feast like no other.
Despite its bold title “Quantum International Relations”, the book does not call for building “a single grand theory of quantum IR,” or launching “another great debate or a polemical attack on other theoretical approaches” (p. 18). Rather, it has a more modest, but still profoundly important and challenging, goal of fostering “a human science for world politics” (the book’s subtitle), because classical or mainstream IR, based largely on Newtonian worldviews, has been too mechanical, deterministic, reductionist, and abstract. On the other hand, the various “weird” characteristics of quantum reality – such as entanglement, superposition, uncertainty, complementarity, the observer effect, and the wave function – seem better equipped to capture the human face of world politics: often contingent, uncertain, probabilistic, entangled, and fundamentally relational.
The book features an impressive list of scholars in the small and emerging community of quantum IR scholars, ranging from PhD candidates to leading scholars who share an interest in all things quantum. The diversity of both contributors (though as the editors rightly note, there still is room for more diversity) and their chapters means that you are likely to find a topic of your own interest. If you want a historical sociology of knowledge about the entanglement, estrangement, and transposition between quantum mechanics, IR, and philosophy, the first three chapters (by Nicholas Harrington, Jayson Waters, and Jairus Victor Grove respectively) in Part 1 “History and Theory” will offer fascinating reading. If you are interested in questions of how quantum technologies and discourses about them will affect various aspects of international relations, then chapters in Part 2 “Science and Technology”, especially by Shohini Ghose, Jon Lindsay, and Frank L. Smith III, provide expert coverage of such issues. Part 3 “Quantizing IR” focuses on examining the theoretical and conceptual affinities between quantum approaches and a range of alternative, non-classical IR approaches such as a dialectical approach (Thomas Biersteker’s chapter), critical theories (Michael Murphy’s chapter), and systems theory (Mathias Albert and Felix M. Bathon’s chapter), while Part 4 “Bringing the Human back into Science” and some chapters in Parts 2 and 3 apply quantum insights to rethinking issues such as state sovereignty (Mark B. Salter’s chapter), the role of money (David Orrell’s chapter), the role of individuals in climate governance and social change (Karen O’Brien and Manjana Milkoreit’s chapter), consciousness (Leonardo Orlando’s chapter), traumatic memory (K. M. Fierke and Nicola Mackay’s chapter), and Kantian ethics and international intervention (Laura Zanotti’s chapter). And those who are curious about mathematical interpretations of quantum theory can learn much from chapters by Michael Schnabel (focusing on linear algebra and probability theory) and Badredine Arfi (focusing on category theory).
While Der Derian, Wendt and their contributors are well aware of the skepticism around the value of a quantum approach, the book is still seemingly written for the (almost) already converted, or at least for those who have some assumed knowledge of quantum theory. For the less initiated reader, many quantum concepts — despite being introduced in the Introduction chapter and elsewhere — could remain largely mysterious and difficult to understand. And this might be a problem if the book hopes to broaden the appeal of quantum IR, as it no doubt does. After all, the ultimate success of the book is probably not best measured by how sympathetic readers respond, but rather by how the general IR community thinks about it. While I myself have been experimenting with understanding IR from a quantum (holographic) perspective (see, for example, Pan, 2025), and therefore I am hardly a detached, unbiased observer, reading the book as a reviewer has put me in a quantum superposition state of being simultaneously inside and outside of the virtual quantum IR circle. From the perspective of an “outsider”, I get the feeling that the book has yet to fully address a couple of nagging issues often raised about quantum IR.
The first is the perennial doubt about whether quantum is applied literally or metaphorically. The editors call for practicing “an open pluralism” on such questions (p. 9), but judging by some other reviews of the book (see, for example, Jackson, 2023), there is no easy way for quantum IR scholars to let themselves off the hook on this issue. Apparently, the skeptics are demanding an almost impossible task: to be truly convincing, quantum IR has to be actual rather than just metaphorical, but then demonstrating how quantum literally works at the human level would first have to overcome the “scaling-up” and “decoherence” problems when quantum effects get washed out at the macroscopic level. Ironically, as Der Derian and Wendt note, mainstream IR, despite the lack of such a “scaling-up” problem, still relies heavily on metaphors “whose metaphorical nature has been forgotten” (p. 9). There is perhaps a subconscious double-standard here but then mainstream IR, by virtue of being mainstream, can now afford to not worry about it. At the same time, this is a metaphysical challenge that still needs to be more systematically addressed, not only by this book, but also by the broader quantum IR community down the track.
Second, the book seems to fall short of meeting the inevitably diverse expectations of its readership. To physicists, with their perhaps strongly held scientistic conviction about how science in general and quantum mechanics in particular work, the very attempt to transpose physics onto politics and IR would seem inherently problematic. To critical IR scholars, many of the “new” ideas introduced by quantum IR sound rather familiar already, except that such ideas have been given a “quantum facelift.” Some may also regard this appeal to the authority of science as yet another case of “physics envy” (Sjoberg, 2020). And finally, to mainstream IR scholars who are likely to ignore quantum IR altogether, the book may appear to offer them little buy-in to get interested in the first place. Sure, it is unrealistic for a book to try to be everything to everyone, and to the credit of the book, it does include a few physicists (e.g., Shohini Ghose and Michael Schnabel) and has featured dialogue with critical approaches in several chapters. There are also a number of chapters on the key IR topic of security. Still, it seems to me that it would probably be able to draw more attention if it included a chapter or two that explicitly engage some mainstream IR concepts and issues such as power (or the balance of power), war, and the security dilemma from a quantum perspective.
These concerns about the book might also be a reflection of both the inherent difficulty of translating the counterintuitive ideas of quantum physics (unlike those from classical physics) into IR on the one hand, and the lack of a collective “aha!” moment for the discipline as a whole on the other. Sure, international relations continue to surprise us, but nothing on the scale, for example, of the abrupt end of the Cold War (which partly helped elevate constructivism to the forefront of IR — see Finnemore and Wendt, 2024), seems to be on the horizon to fundamentally disrupt conventional perspectives. Perhaps in this chancy, indeterminate world, quantum IR needs a bit of its own luck to make further inroads into this still largely Newtonian discipline.
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![Iran war: Tehran vows response to US seizure of cargo shipSkip next section Oil prices up, stocks down amid Strait of Hormuz standoff04/20/2026April 20, 2026Oil prices up, stocks down amid Strait of Hormuz standoffCrude prices jumped and the US dollar rose but equity futures fell in early Asian trading on Monday.
The price of Brent crude, the international benchmark, soared as much as 7% to .85 a barrel.
The S&P 500 futures, meanwhile, fell about 0.9%, while the US dollar appreciated against several other currencies, including the euro and the Japanese yen.
The market movements signal investor concern over the Middle East situation, with Iran shutting the Strait of Hormuz once again amid the continuing US blockade of Iranian ports and ships.
Will the Iran war cause a global recession?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
https://p.dw.com/p/5CSfxSkip next section Iran ‘will soon respond’ to US seizure of Iranian-flagged ship, military says04/20/2026April 20, 2026Iran ‘will soon respond’ to US seizure of Iranian-flagged ship, military saysIranian authorities have accused the US of violating the ceasefire agreement between the two sides by firing at one of Iran’s commercial ships in the Gulf of Oman.
Iran’s top joint military command, the Hazrat Khatam al-Anbiya Central Headquarters, vowed to respond swiftly to the US actions.
“We warn that the armed forces of the Islamic Republic of Iran will soon respond and retaliate against this armed piracy by the US military,” the spokesperson said.
Earlier, US naval forces stationed in the region intercepted and seized an Iranian-flagged cargo vessel, which they said had tried to sail through the waters of the Gulf of Oman, in violation of the US blockade of Iranian ports and shipping.
Iranian state media quoted a military spokesperson as saying that the vessel was en route from China to Iran.
https://p.dw.com/p/5CSfnSkip next section Why is Iran not planning to join new round of talks with US?04/19/2026April 19, 2026Why is Iran not planning to join new round of talks with US?Pakistan said it was ready to host a new round of talks, but Iran appears unwilling to attendImage: Qamar Zaman/dpa/picture allianceHours after Donald Trump announced he was dispatching US negotiators for a fresh round of talks in Islamabad, Iran said it has no intention of joining.
So far, engagement between Washington and Tehran has been limited to a single 21-hour negotiating session in Islamabad on April 11 that ended without any breakthrough.
Iranian parliament speaker Mohammad Bagher Ghalibaf said afterwards that the US side “ultimately failed to gain the trust of the Iranian delegation in this round of negotiation.”
Washington’s hardline stance further complicates matters
A major sticking point is the US blockade of Iranian ports, which continues to overshadow diplomacy just days before the two-week ceasefire is due to expire.
Trump’s announcement that US Marines had seized an Iranian ship attempting to evade the blockade is likely to fuel tensions further.
Although Iran briefly reopened the Strait of Hormuz following a ceasefire in Lebanon, it quickly reversed course in response to the ongoing US blockade.
Earlier, the Fars and Tasnim news agencies, citing anonymous sources, reported that lifting the US blockade was a precondition for any renewed talks.
Another point of contention: Iran’s enrichment program
Trump said on Friday that Iran had agreed to give up its stock of around 440 kilograms of enriched uranium.
However, Iran’s Foreign Ministry later said the stockpile was “not going to be transferred anywhere.”
Foreign Ministry Spokesman Esmaeil Baghaei told state TV that the “transfer of Iran’s enriched uranium to the US has never been raised in negotiations.”
https://p.dw.com/p/5CSf6Skip next section Iran has ‘no plans’ to join talks in Islamabad: state media04/19/2026April 19, 2026Iran has ‘no plans’ to join talks in Islamabad: state mediaTehran was not planning to take part in a new round of negotiations with the United States in Islamabad, Iranian state media reported on Sunday
“There are currently no plans to participate in the next round of Iran-US talks,” state broadcaster IRIB reported, in English, on X.
It was not immediately clear who was behind the announcement.
https://p.dw.com/p/5CSWZSkip next section Trump: US Marines seized Iranian-flagged cargo ship04/19/2026April 19, 2026Trump: US Marines seized Iranian-flagged cargo shipPresident Donald Trump said US forces seized an Iranian-flagged cargo ship on Sunday. The vessel was trying to evade a US naval blockade near the Strait of Hormuz, he wrote in a post on his Truth Social platform.
“Our Navy ship stopped them right in their tracks by blowing a hole in the engineroom,” Trump wrote.
He added that US Marines had taken custody of the ship, named Touska, and were “seeing what’s on board!”
https://p.dw.com/p/5CSMsSkip next section Pakistani PM assures Iranian president of committment as mediator of peace04/19/2026April 19, 2026Pakistani PM assures Iranian president of committment as mediator of peacePakistani Prime Minister Shehbaz Sharif said he discussed the conflict in the Gulf with Iranian President Masoud Pezeshkian on Sunday.
Sharif wrote in a post on X that he “shared insights from my recent engagements with leaders of Saudi Arabia, Qatar and Türkiye.”
“I appreciated Iran’s engagement, including its high-level delegation to Islamabad for the historic talks, and recent discussions with Field Marshal Syed Asim Munir,” Sharif said.
Sharif told Pezeshkian that Pakistan remains committed to its role as a facilitator of peace and regional stability.
https://p.dw.com/p/5CSBlSkip next section Unclear if Iran will join second round of Islamabad talks04/19/2026April 19, 2026Unclear if Iran will join second round of Islamabad talksIt is still unclear whether Iran will ultimately join the second round of talks in Islamabad with the United States.
State-run Iranian news agency Irna reported Sunday that “there is no clear prospect of fruitful negotiations.”
Irna also pointed to Washington’s “maximalism and unreasonable and unrealistic demands, frequent changes of positions, constant contradictions and the continuation of the so-called naval blockade.”
Meanwhile, the Fars and Tasnim news agencies, quoting anonymous sources, said, “The overall atmosphere cannot be assessed as very positive.”
Fars cited one source as saying that the lifting of a US blockade on Iranian ports was a precondition for continued talks.
https://p.dw.com/p/5CS5vSkip next section IN DEPTH: Mines in the Strait of Hormuz: How dangerous are they?04/19/2026April 19, 2026IN DEPTH: Mines in the Strait of Hormuz: How dangerous are they?Underwater mines can pose a threat in infested areas for decades to come [FILE: Black Sea, Bulgaria on July 1, 2022]Image: BULGARIAN MINISTRY OF DEFENCE Via REUTERSOn Friday, German Chancellor Friedrich Merz said his country was prepared to supply mine clearance and maritime reconnaissance to help secure the Strait of Hormuz.
The same day, Iran’s top diplomat Abbas Araghchi declared the critical waterway “completely open” for the duration of the Israel-Lebanon ceasefire, and US President Donald Trump likewise said it was “ready for full passage.”
The following day, Iran reversed its decision, shutting the strait again.
Either way, maritime traffic might still be at risk, given that Iranian authorities had previously indicated there may be underwater mines in the strait.
How dangerous are naval mines, and what can be done to clear them? Find out here.
https://p.dw.com/p/5CS5KSkip next section Vance to return to Islamabad for new round of talks04/19/2026April 19, 2026Vance to return to Islamabad for new round of talksThe trio — JD Vance (right), Jared Kushner (left) and Steve Witkoff (middle) — were in Islambad during the first round of talks [FILE: April 12, 2026]Image: Jacquelyn Martin/AP Photo/picture allianceUS Vice President JD Vance, who led the first round of talks between the US and Iran last weekend, will return to Islamabad for the negotiations, according to a White House official.
Trump’s envoy Steve Witkoff and son-in-law Jared Kushner will also be part of the delegation.
Earlier, Trump had said Vance would not go to the Pakistani capital. “It’s only because of security,” Trump told ABC News. “JD’s great.”
Last Sunday, Vance left Islamabad after 21 hours of talks with Iranian officials ended without a breakthrough. Iran war: What’s next after Islamabad talks fail?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
https://p.dw.com/p/5CRyrSkip next section Two cruise ships pass through Hormuz04/19/2026April 19, 2026Two cruise ships pass through HormuzThe Mein Schiff 4, seen here on the right in 2020, passed through the Strait of Hormuz on Sunday (File photo: July 2020)Image: Petra Nowack/penofoto/imago imagesGermany-based TUI Cruises said that its Mein Schiff 4 and Mein Schiff 5 ships passed through the Strait of Hormuz on Sunday.
According to the maritime data service MarineTraffic, only one other cruise ship, the Celestial Discovery, formerly known as the Aida aura, had been able to pass the strait since the start of the Iran war on February 28, when the US and Israel attacked Iran.
Tui said that all passengers had previously been brought home and both ships were operating with reduced crews, adding that it had obtained approvals from relevant authorities to cross the strait, under careful consideration of the security situation.
It said the ships would now continue on to the Mediterranean Sea.
https://p.dw.com/p/5CRvSSkip next section Macron to meet with Lebanese PM04/19/2026April 19, 2026Macron to meet with Lebanese PMMacron has demanded that the Lebanese government arrest those responsible for the attack [FILE: April 8, 2026]Image: Tom Nicholson/REUTERSFrench President Emmanuel Macron is expected to meet with Lebanese Prime Minister Nawaf Salam in Paris this week, his office announced.
The meeting comes amid a fragile 10-day ceasefire between Israel and the Iran-backed militant group Hezbollah.
The visit was announced a day after France blamed Hezbollah for an ambush on UN peacekeepers that left one French soldier dead and three others wounded.
Macron is expected to urge Lebanese authorities to “shed full light on the incident” and “identify and prosecute those responsible without delay,” his office added.
With the move, the French government will highlight Macron’s commitment to seeing “full and complete respect for the ceasefire in Lebanon” as well as France’s support for Lebanon’s “territorial integrity,” the president’s office said on Sunday.
https://p.dw.com/p/5CRvRSkip next section Iran not sending negotiating delegation to Pakistan, Tasnim reports04/19/2026April 19, 2026Iran not sending negotiating delegation to Pakistan, Tasnim reportsIran is not sending a negotiating delegation to Pakistan “as long as there is a naval blockade,” Iran’s Tasnim news agency reported on Sunday.
The development came after Pakistani Foreign Minister Ishaq Dar, who spoke by phone with his Iranian counterpart Abbas Araghchi on Sunday, had said his country was working to “bridge” differences between Washington and Tehran.
Earlier, US President Donald Trump had announced that US negotiators were due in Islamabad on Monday evening.
Late Saturday, Parliament Speaker Mohammed Bagher Ghalibaf, who has emerged as Iran’s main negotiator, said in an interview on state television that “there will be no retreat in the field of diplomacy.” [embed]https://www.youtube.com/watch?v=0TDeUMPkqbE[/embed]
https://p.dw.com/p/5CRvESkip next section Trump accuses Iran of ceasefire violations04/19/2026April 19, 2026Trump accuses Iran of ceasefire violationsTrump has said he won’t let Tehran ‘blackmail us’ over the Strait of Hormuz [April 16, 2026]Image: Mehmet Eser/SOPA Images/ZUMA/picture allianceUS President Donald Trump accused the Iranian regime of violating the current ceasefire agreement and threatened to “to knock out every single Power Plant, and every single Bridge,” if Iran does not make a deal with the US.
Tehran said on Saturday it would keep the Strait of Hormuz closed. At least two ships reported they had been fired upon while approaching the strait on Saturday.
“Iran decided to fire bullets yesterday in the Strait of Hormuz — A Total Violation of our Ceasefire Agreement!” Trump wrote in a post Sunday on his Truth Social platform. “That wasn’t nice, was it?”
https://p.dw.com/p/5CRlKSkip next section Iran accuses US of violating ceasefire via blockade04/19/2026April 19, 2026Iran accuses US of violating ceasefire via blockadeIran has called the US blockade on its ports a “violation” of the ceasefire agreement mediated by Pakistan some 10-days ago, which paused over six weeks of fighting.
“The United States’ so-called ‘blockade’ of Iran’s ports or coastline is not only a violation of Pakistani-mediated ceasefire but also both unlawful and criminal,” Iranian Foreign Ministry spokesman Ismaeil Baqaei said Sunday on X.
He cited a United Nations General Assembly resolution to argue that the blockade was an “act of aggression” against Iran.
“Moreover, by deliberately inflicting collective punishment on the Iranian population, it amounts to war crime and crime against humanity,” the Foreign Ministry spokesman went on to say.
Iran has reverted to shuttering the critical Strait of Hormuz after Trump refused to lift the blockade.
https://p.dw.com/p/5CRlfSkip next section US negotiators due in Pakistan early next week, Trump says04/19/2026April 19, 2026US negotiators due in Pakistan early next week, Trump saysUS negotiators are due in the Pakistani capital on Monday evening, US President Donald Trump announced on Sunday, as Islamabad mediates efforts aimed at ending the US-Israeli war on Iran.
“My Representatives are going to Islamabad, Pakistan — They will be there tomorrow evening, for Negotiations,” Trump said in a lengthy post on his Truth Social platform.
He then strayed into criticism and threats against Iran, which he accused of violating the ceasefire agreement by attacking ships attempting to pass through the strategic Strait of Hormuz on Saturday.
Iran had briefly reopened the critical waterway on Friday, only to announce closing it again less than 24 hours later after Trump refused to lift a blockade on its ports.
Questioning Iran’s closure of the strait, Trump called it “strange” because “our BLOCKADE has already closed it.”
Without mentioning any of the terms, he also said the US proposed a peace agreement.
“We’re offering a very fair and reasonable DEAL, and I hope they take it because, if they don’t, the United States is going to knock out every single Power Plant, and every single Bridge, in Iran. NO MORE MR. NICE GUY!” Trump went on to say.
https://p.dw.com/p/5CRiQ#Iran #war #Tehran #vows #response #seizure #cargo #ship](https://i0.wp.com/static.dw.com/image/76386594_6.jpg?ssl=1 "Iran war: Tehran vows response to US seizure of cargo shipSkip next section Oil prices up, stocks down amid Strait of Hormuz standoff04/20/2026April 20, 2026Oil prices up, stocks down amid Strait of Hormuz standoffCrude prices jumped and the US dollar rose but equity futures fell in early Asian trading on Monday.
The price of Brent crude, the international benchmark, soared as much as 7% to .85 a barrel.
The S&P 500 futures, meanwhile, fell about 0.9%, while the US dollar appreciated against several other currencies, including the euro and the Japanese yen.
The market movements signal investor concern over the Middle East situation, with Iran shutting the Strait of Hormuz once again amid the continuing US blockade of Iranian ports and ships.
Will the Iran war cause a global recession?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
https://p.dw.com/p/5CSfxSkip next section Iran ‘will soon respond’ to US seizure of Iranian-flagged ship, military says04/20/2026April 20, 2026Iran ‘will soon respond’ to US seizure of Iranian-flagged ship, military saysIranian authorities have accused the US of violating the ceasefire agreement between the two sides by firing at one of Iran’s commercial ships in the Gulf of Oman.
Iran’s top joint military command, the Hazrat Khatam al-Anbiya Central Headquarters, vowed to respond swiftly to the US actions.
“We warn that the armed forces of the Islamic Republic of Iran will soon respond and retaliate against this armed piracy by the US military,” the spokesperson said.
Earlier, US naval forces stationed in the region intercepted and seized an Iranian-flagged cargo vessel, which they said had tried to sail through the waters of the Gulf of Oman, in violation of the US blockade of Iranian ports and shipping.
Iranian state media quoted a military spokesperson as saying that the vessel was en route from China to Iran.
https://p.dw.com/p/5CSfnSkip next section Why is Iran not planning to join new round of talks with US?04/19/2026April 19, 2026Why is Iran not planning to join new round of talks with US?Pakistan said it was ready to host a new round of talks, but Iran appears unwilling to attendImage: Qamar Zaman/dpa/picture allianceHours after Donald Trump announced he was dispatching US negotiators for a fresh round of talks in Islamabad, Iran said it has no intention of joining.
So far, engagement between Washington and Tehran has been limited to a single 21-hour negotiating session in Islamabad on April 11 that ended without any breakthrough.
Iranian parliament speaker Mohammad Bagher Ghalibaf said afterwards that the US side “ultimately failed to gain the trust of the Iranian delegation in this round of negotiation.”
Washington’s hardline stance further complicates matters
A major sticking point is the US blockade of Iranian ports, which continues to overshadow diplomacy just days before the two-week ceasefire is due to expire.
Trump’s announcement that US Marines had seized an Iranian ship attempting to evade the blockade is likely to fuel tensions further.
Although Iran briefly reopened the Strait of Hormuz following a ceasefire in Lebanon, it quickly reversed course in response to the ongoing US blockade.
Earlier, the Fars and Tasnim news agencies, citing anonymous sources, reported that lifting the US blockade was a precondition for any renewed talks.
Another point of contention: Iran’s enrichment program
Trump said on Friday that Iran had agreed to give up its stock of around 440 kilograms of enriched uranium.
However, Iran’s Foreign Ministry later said the stockpile was “not going to be transferred anywhere.”
Foreign Ministry Spokesman Esmaeil Baghaei told state TV that the “transfer of Iran’s enriched uranium to the US has never been raised in negotiations.”
https://p.dw.com/p/5CSf6Skip next section Iran has ‘no plans’ to join talks in Islamabad: state media04/19/2026April 19, 2026Iran has ‘no plans’ to join talks in Islamabad: state mediaTehran was not planning to take part in a new round of negotiations with the United States in Islamabad, Iranian state media reported on Sunday
“There are currently no plans to participate in the next round of Iran-US talks,” state broadcaster IRIB reported, in English, on X.
It was not immediately clear who was behind the announcement.
https://p.dw.com/p/5CSWZSkip next section Trump: US Marines seized Iranian-flagged cargo ship04/19/2026April 19, 2026Trump: US Marines seized Iranian-flagged cargo shipPresident Donald Trump said US forces seized an Iranian-flagged cargo ship on Sunday. The vessel was trying to evade a US naval blockade near the Strait of Hormuz, he wrote in a post on his Truth Social platform.
“Our Navy ship stopped them right in their tracks by blowing a hole in the engineroom,” Trump wrote.
He added that US Marines had taken custody of the ship, named Touska, and were “seeing what’s on board!”
https://p.dw.com/p/5CSMsSkip next section Pakistani PM assures Iranian president of committment as mediator of peace04/19/2026April 19, 2026Pakistani PM assures Iranian president of committment as mediator of peacePakistani Prime Minister Shehbaz Sharif said he discussed the conflict in the Gulf with Iranian President Masoud Pezeshkian on Sunday.
Sharif wrote in a post on X that he “shared insights from my recent engagements with leaders of Saudi Arabia, Qatar and Türkiye.”
“I appreciated Iran’s engagement, including its high-level delegation to Islamabad for the historic talks, and recent discussions with Field Marshal Syed Asim Munir,” Sharif said.
Sharif told Pezeshkian that Pakistan remains committed to its role as a facilitator of peace and regional stability.
https://p.dw.com/p/5CSBlSkip next section Unclear if Iran will join second round of Islamabad talks04/19/2026April 19, 2026Unclear if Iran will join second round of Islamabad talksIt is still unclear whether Iran will ultimately join the second round of talks in Islamabad with the United States.
State-run Iranian news agency Irna reported Sunday that “there is no clear prospect of fruitful negotiations.”
Irna also pointed to Washington’s “maximalism and unreasonable and unrealistic demands, frequent changes of positions, constant contradictions and the continuation of the so-called naval blockade.”
Meanwhile, the Fars and Tasnim news agencies, quoting anonymous sources, said, “The overall atmosphere cannot be assessed as very positive.”
Fars cited one source as saying that the lifting of a US blockade on Iranian ports was a precondition for continued talks.
https://p.dw.com/p/5CS5vSkip next section IN DEPTH: Mines in the Strait of Hormuz: How dangerous are they?04/19/2026April 19, 2026IN DEPTH: Mines in the Strait of Hormuz: How dangerous are they?Underwater mines can pose a threat in infested areas for decades to come [FILE: Black Sea, Bulgaria on July 1, 2022]Image: BULGARIAN MINISTRY OF DEFENCE Via REUTERSOn Friday, German Chancellor Friedrich Merz said his country was prepared to supply mine clearance and maritime reconnaissance to help secure the Strait of Hormuz.
The same day, Iran’s top diplomat Abbas Araghchi declared the critical waterway “completely open” for the duration of the Israel-Lebanon ceasefire, and US President Donald Trump likewise said it was “ready for full passage.”
The following day, Iran reversed its decision, shutting the strait again.
Either way, maritime traffic might still be at risk, given that Iranian authorities had previously indicated there may be underwater mines in the strait.
How dangerous are naval mines, and what can be done to clear them? Find out here.
https://p.dw.com/p/5CS5KSkip next section Vance to return to Islamabad for new round of talks04/19/2026April 19, 2026Vance to return to Islamabad for new round of talksThe trio — JD Vance (right), Jared Kushner (left) and Steve Witkoff (middle) — were in Islambad during the first round of talks [FILE: April 12, 2026]Image: Jacquelyn Martin/AP Photo/picture allianceUS Vice President JD Vance, who led the first round of talks between the US and Iran last weekend, will return to Islamabad for the negotiations, according to a White House official.
Trump’s envoy Steve Witkoff and son-in-law Jared Kushner will also be part of the delegation.
Earlier, Trump had said Vance would not go to the Pakistani capital. “It’s only because of security,” Trump told ABC News. “JD’s great.”
Last Sunday, Vance left Islamabad after 21 hours of talks with Iranian officials ended without a breakthrough. Iran war: What’s next after Islamabad talks fail?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
https://p.dw.com/p/5CRyrSkip next section Two cruise ships pass through Hormuz04/19/2026April 19, 2026Two cruise ships pass through HormuzThe Mein Schiff 4, seen here on the right in 2020, passed through the Strait of Hormuz on Sunday (File photo: July 2020)Image: Petra Nowack/penofoto/imago imagesGermany-based TUI Cruises said that its Mein Schiff 4 and Mein Schiff 5 ships passed through the Strait of Hormuz on Sunday.
According to the maritime data service MarineTraffic, only one other cruise ship, the Celestial Discovery, formerly known as the Aida aura, had been able to pass the strait since the start of the Iran war on February 28, when the US and Israel attacked Iran.
Tui said that all passengers had previously been brought home and both ships were operating with reduced crews, adding that it had obtained approvals from relevant authorities to cross the strait, under careful consideration of the security situation.
It said the ships would now continue on to the Mediterranean Sea.
https://p.dw.com/p/5CRvSSkip next section Macron to meet with Lebanese PM04/19/2026April 19, 2026Macron to meet with Lebanese PMMacron has demanded that the Lebanese government arrest those responsible for the attack [FILE: April 8, 2026]Image: Tom Nicholson/REUTERSFrench President Emmanuel Macron is expected to meet with Lebanese Prime Minister Nawaf Salam in Paris this week, his office announced.
The meeting comes amid a fragile 10-day ceasefire between Israel and the Iran-backed militant group Hezbollah.
The visit was announced a day after France blamed Hezbollah for an ambush on UN peacekeepers that left one French soldier dead and three others wounded.
Macron is expected to urge Lebanese authorities to “shed full light on the incident” and “identify and prosecute those responsible without delay,” his office added.
With the move, the French government will highlight Macron’s commitment to seeing “full and complete respect for the ceasefire in Lebanon” as well as France’s support for Lebanon’s “territorial integrity,” the president’s office said on Sunday.
https://p.dw.com/p/5CRvRSkip next section Iran not sending negotiating delegation to Pakistan, Tasnim reports04/19/2026April 19, 2026Iran not sending negotiating delegation to Pakistan, Tasnim reportsIran is not sending a negotiating delegation to Pakistan “as long as there is a naval blockade,” Iran’s Tasnim news agency reported on Sunday.
The development came after Pakistani Foreign Minister Ishaq Dar, who spoke by phone with his Iranian counterpart Abbas Araghchi on Sunday, had said his country was working to “bridge” differences between Washington and Tehran.
Earlier, US President Donald Trump had announced that US negotiators were due in Islamabad on Monday evening.
Late Saturday, Parliament Speaker Mohammed Bagher Ghalibaf, who has emerged as Iran’s main negotiator, said in an interview on state television that “there will be no retreat in the field of diplomacy.” [embed]https://www.youtube.com/watch?v=0TDeUMPkqbE[/embed]
https://p.dw.com/p/5CRvESkip next section Trump accuses Iran of ceasefire violations04/19/2026April 19, 2026Trump accuses Iran of ceasefire violationsTrump has said he won’t let Tehran ‘blackmail us’ over the Strait of Hormuz [April 16, 2026]Image: Mehmet Eser/SOPA Images/ZUMA/picture allianceUS President Donald Trump accused the Iranian regime of violating the current ceasefire agreement and threatened to “to knock out every single Power Plant, and every single Bridge,” if Iran does not make a deal with the US.
Tehran said on Saturday it would keep the Strait of Hormuz closed. At least two ships reported they had been fired upon while approaching the strait on Saturday.
“Iran decided to fire bullets yesterday in the Strait of Hormuz — A Total Violation of our Ceasefire Agreement!” Trump wrote in a post Sunday on his Truth Social platform. “That wasn’t nice, was it?”
https://p.dw.com/p/5CRlKSkip next section Iran accuses US of violating ceasefire via blockade04/19/2026April 19, 2026Iran accuses US of violating ceasefire via blockadeIran has called the US blockade on its ports a “violation” of the ceasefire agreement mediated by Pakistan some 10-days ago, which paused over six weeks of fighting.
“The United States’ so-called ‘blockade’ of Iran’s ports or coastline is not only a violation of Pakistani-mediated ceasefire but also both unlawful and criminal,” Iranian Foreign Ministry spokesman Ismaeil Baqaei said Sunday on X.
He cited a United Nations General Assembly resolution to argue that the blockade was an “act of aggression” against Iran.
“Moreover, by deliberately inflicting collective punishment on the Iranian population, it amounts to war crime and crime against humanity,” the Foreign Ministry spokesman went on to say.
Iran has reverted to shuttering the critical Strait of Hormuz after Trump refused to lift the blockade.
https://p.dw.com/p/5CRlfSkip next section US negotiators due in Pakistan early next week, Trump says04/19/2026April 19, 2026US negotiators due in Pakistan early next week, Trump saysUS negotiators are due in the Pakistani capital on Monday evening, US President Donald Trump announced on Sunday, as Islamabad mediates efforts aimed at ending the US-Israeli war on Iran.
“My Representatives are going to Islamabad, Pakistan — They will be there tomorrow evening, for Negotiations,” Trump said in a lengthy post on his Truth Social platform.
He then strayed into criticism and threats against Iran, which he accused of violating the ceasefire agreement by attacking ships attempting to pass through the strategic Strait of Hormuz on Saturday.
Iran had briefly reopened the critical waterway on Friday, only to announce closing it again less than 24 hours later after Trump refused to lift a blockade on its ports.
Questioning Iran’s closure of the strait, Trump called it “strange” because “our BLOCKADE has already closed it.”
Without mentioning any of the terms, he also said the US proposed a peace agreement.
“We’re offering a very fair and reasonable DEAL, and I hope they take it because, if they don’t, the United States is going to knock out every single Power Plant, and every single Bridge, in Iran. NO MORE MR. NICE GUY!” Trump went on to say.
https://p.dw.com/p/5CRiQ#Iran #war #Tehran #vows #response #seizure #cargo #ship")
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