Iran Halts All Negotiations With the U.S. and Vows to "Completely Block" the Strait of Hormuz

On June 1, 2026, Iran's IRGC-affiliated Tasnim news agency reported that Tehran has halted all indirect message exchanges with the United States through intermediaries. The reason: Israel's continued military operations in Lebanon against Hezbollah, which Iran considers a violation of the broader ceasefire.

Iran also announced it would pursue the complete closure of the Strait of Hormuz and activate the Bab al-Mandeb Strait — the two most critical shipping chokepoints in the world — "to punish Israel and its supporters."

Why talks collapsed

The ceasefire between the U.S. and Iran took effect on April 8, with Pakistan as primary mediator. A separate U.S.-brokered Israel-Lebanon ceasefire began on April 16. Iran has always maintained that the broader ceasefire covers all fronts, including Lebanon.

Foreign Minister Abbas Araghchi wrote on X that a violation on one front constitutes a violation "on all fronts" and that "the US and Israel are responsible for the consequences of any violation."

Since the ceasefire, Israel has pushed its ground invasion deeper into Lebanon. At least 3,433 people have been killed in Lebanon since the war between Israel and Hezbollah began on March 2, and at least 10,395 wounded. The deadliest day since the truce came into force killed 14 people in Israeli strikes alone.

Tasnim's statement: "No dialogue will take place" until Israel fully withdraws from Lebanon and stops all attacks in both Lebanon and Gaza.

The deal that died

The two sides had been working toward a 60-day memorandum of understanding to extend the ceasefire and open nuclear talks. The draft terms included:

• Unrestricted shipping through the Strait of Hormuz
• Iran removing mines from the strait within 30 days
• Proportional lifting of the U.S. naval blockade
• Sanctions waivers permitting Iranian oil sales

Trump had claimed on May 23 that the deal was "largely negotiated" and would be announced shortly. Iran's Fars news agency dismissed that as "incomplete and inconsistent with reality." Trump then requested amendments — particularly regarding Iran's highly enriched uranium and Hormuz terms — which the Institute for the Study of War described as "somewhat significant changes."

All of it is now dead.

Oil markets

Markets reacted immediately:

• WTI crude surged $6.68 (7.7%) to $94.04 per barrel
• Brent crude rose $6.02 (6.6%) to $97.14 per barrel
• Oil contracts remain up more than 30% since the war began on February 28

Prices had been retreating in recent weeks as investors grew optimistic about a deal. That optimism evaporated in a single morning.

Trump's response

Asked if Iranian negotiators told him they would not negotiate further, Trump said: "No, they haven't."

He added: "If they're over, they're over... frankly, I thought they started to get very boring."

On whether the collapse of talks concerned him: "I don't care."

He said U.S. NATO allies "should come in and help us out" because they rely on Hormuz oil more than the U.S., adding: "We don't need it, we have a lot of oil."

At 1:00 a.m. Monday on Truth Social, he had posted: "Iran really wants to make a deal." By afternoon, Iran had suspended all talks and announced a complete blockade. The president said he didn't care and that negotiations were boring.

The weekend military exchanges

The diplomatic collapse came against a backdrop of active combat. Over the weekend:

• U.S. CENTCOM struck Iranian air defenses, two drones threatening ships, and a ground control station
• Iran shot down a U.S. MQ-1 Predator drone operating over international waters
• IRGC Major General Mohsen Rezaei posted: "The Strait of Hormuz is under Iran's control. We will not allow the naval blockade to continue. The patience of the armed forces of the Islamic Republic of Iran has its limits."
• Iran's Persian Gulf Strait Authority had been charging vessels $2 million per passage — the U.S. Treasury sanctioned the authority the prior week

Three months in

On February 28, the United States and Israel launched surprise airstrikes on Iran, killing the Supreme Leader and starting a war that U.S. intelligence had assessed posed no imminent threat. Three months later:

• The Strait of Hormuz remains effectively closed
• Oil is up 30%
• The ceasefire has collapsed
• At least 3,433 people are dead in Lebanon alone
• Iran is threatening to activate a second chokepoint
• The deal that would have reopened the strait is dead
• The president says he doesn't care and that negotiations were boring

A war started without cause, prosecuted without strategy, and now — when the only path to reopening the world's most important shipping lane dies on the table — dismissed as boring by the man who started it.