U.S. Announces Naval Blockade of Strait of Hormuz Amid Failed Iran Talks

S. naval blockade of the Strait of Hormuz went into effect on April 13, 2026, targeting Iranian ports and ships attempting to enter or leave the area. S. and Iranian delegations in Islamabad, Pakistan.

S. delegation, which departed after 21 hours without reaching an agreement. S. S. Navy would intercept any Iranian vessels approaching it. Trump warned that such ships would be immediately eliminated.

The announcement came after mediators indicated that talks could continue, with both sides believing a deal remains possible.

Economic Repercussions Oil prices jumped more than 7%, with U.

S. crude rising above $100 per barrel. Forecasts from market predictors suggest prices could reach $135 per barrel this year. S. stocks fell, with the Dow dropping 350 points in morning trading as energy costs escalated.

Emerging-market currencies initially weakened but pared losses as oil prices retreated slightly after the blockade deadline passed. The disruption risks broader global economic effects due to the strait’s role in oil shipping. Commodities like aluminum also saw price increases amid the tensions.

International Reactions The United Kingdom announced it would not join the U.

S. blockade. British Prime Minister Keir Starmer said the country is not supporting the action and continues to call for freedom of navigation in the strait. S. and Iran in the coming days to bridge remaining gaps.

Regional Context The blockade occurs against a backdrop of fragile ceasefires in the Middle East.

S. and Iran had been reached earlier, with both sides claiming victory. However, ongoing strikes between Israel and Hezbollah threaten the agreement, with Israeli officials stating it does not apply to Lebanon.

Iran stated that the Strait of Hormuz is closed due to Israeli strikes on Lebanon. Tensions remain high, with Hezbollah supporters protesting negotiations involving Israel. S. officials described the original Iranian 10-point peace plan as discarded during talks.