Donald Trump vows U.S. will sink any Iran boats that challenge blockade

U.S. President Donald Trump warned on Monday (April 13, 2026) that any Iranian attack boats that approach the naval blockade he has ordered around the country’s ports will be destroyed, despite international calls for a ceasefire to be respected and negotiations to resume.

The U.S. military said the blockade would begin at 1930 hours IST and apply to all ships leaving or seeking to dock at Iranian harbours, but as the deadline passed there was no announcement that the measure had come into effect, nor sign of any interceptions.