US-Iran ‘peace deal’ announced; Trump says Strait of Hormuz reopening

What Happened

On Sunday, US President Donald Trump announced on Truth Social that a ceasefire deal with Iran had been completed, immediately ending hostilities and authorizing the toll-free reopening of the Strait of Hormuz along with the removal of the US naval blockade. The agreement was later confirmed by Iran’s deputy foreign minister. Pakistani Prime Minister Shebaz Sharif had earlier posted on X that the peace deal—mediated with support from Qatar, Saudi Arabia, and Türkiye—ends military operations on all fronts including Lebanon, with an official signing ceremony set for Friday, June 19 in Switzerland. The deal follows a US-Israeli assault on Iran launched on December 28 and days of speculation, and comes after Israeli airstrikes on Beirut’s southern suburbs had threatened to derail it. Qatar’s foreign ministry welcomed the memorandum of understanding, and leaders from the UK and France pledged support for its implementation and the restoration of maritime traffic.

Key Actors

Why It Matters

The agreement halts direct US-Iran military confrontation following the December 28 assault, reopens the strategically vital Strait of Hormuz—whose closure had disrupted global oil flows—and removes the US naval blockade. It marks a sudden diplomatic breakthrough brokered by multiple regional mediators, potentially stabilizing energy markets and opening the door to a broader nuclear deal. The sworn cessation of fighting on all fronts, including in Lebanon, could reshape the security landscape across the Middle East.

Watch For

A series of pre-implementation technical talks this week, culminating in the official signing ceremony in Switzerland on Friday, June 19. Concrete steps to clear mines and restore shipping through the Strait of Hormuz. The reaction of Israel, which had struck Beirut shortly before the deal was announced, and the extent to which the memorandum of understanding leads to detailed nuclear negotiations. Statements from the IAEA and the E3 on verifiable compliance.