Iran’s Islamic Revolutionary Guard Corps Navy (IRGC) announced on Saturday that the Strait of Hormuz is closed and any vessel attempting to pass through will be targeted. The decision reverses an earlier reopening of the vital waterway less than 24 hours prior. The IRGC said the closure will remain until the United States lifts its naval blockade on Iranian vessels and ports, calling the blockade a violation of the ceasefire in the ongoing US-Israel war on Iran. The statement warned that any ship approaching the strait would be considered cooperating with the enemy.

Iranian parliament speaker Mohammad Bagher Ghalibaf said the strait is under Iran’s control and criticized the US blockade as “clumsy and ignorant.” The reversal came after Iran briefly reopened the strait in line with a 10-day ceasefire between Israel and Lebanon, which had led to a temporary drop in global oil prices. Reports from the United Kingdom Maritime Trade Operations and India’s Ministry of External Affairs indicated that Iranian gunboats fired on two commercial ships.

US President Donald Trump warned that Washington would not be blackmailed and threatened to end the ceasefire if no deal is reached before its expiry. Analysts said the renewed closure signals a return to heightened tensions and competing blockades in the region.