The U.S. Central Command said the blockade would be "enforced impartially against vessels of all nations" from 10 a.m. EDT, following the breakdown of talks after 21 hours of negotiations.
NPR's Michel Martin speaks to retired U.S. Navy Admiral James Foggo, dean of the Center for Maritime Strategy, about President Trump's command to blockade the Strait of Hormuz.
Pope Leo embarks on a whirlwind 18-flight tour across Africa as the Vatican ramps up criticism of the U.S.-Israel war in Iran, drawing a sharp rebuke from President Trump.