The Islamic Revolutionary Guard Corps said it attacked a U.S.-linked oil tanker in the northern Persian Gulf, leaving the vessel ablaze near Kuwait. The claim followed a sharp warning from Iran’s foreign minister, Abbas Araghchi, who vowed the United States would “bitterly regret” sinking the warship near Sri Lanka. Iranian forces also warned they would control shipping through the strategic Strait of Hormuz in wartime, signaling restrictions on Western-linked vessels and raising fears of a wider confrontation in one of the world’s most critical oil routes.