The United States launched new air strikes against Iran early Thursday, and Tehran responded by targeting Bahrain, Kuwait and Qatar in crossfire that again threatened an interim deal intended to help end the war in the Persian Gulf.The strikes came hours after US President Donald Trump said recent Iranian attacks on ships in the Strait of Hormuz signalled the end of the fragile ceasefire. The US struck a variety of military sites and port facilities early Wednesday following Iran’s targeting of several merchant vessels off the coast of Oman, sparking Iranian fire then as well.But Thursday’s attacks appeared bigger all around, with sirens sounding at least twice in Bahrain, home to the US Navy’s 5th Fleet headquarters. There was no immediate word of damage in the three Gulf Arab countries. Kuwait’s military said it was actively intercepting incoming drones and missiles.Military officials said in a social media post that the latest strikes were intended to “further degrade” Iran’s ability “to threaten freedom of navigation” in the strait, through which a fifth of the world’s traded oil and natural gas passed before the war began with US and Israeli attacks on February 28.Iranian state media reported explosions in several locations, including Bushehr, home to Iran’s nuclear power plant complex, and the southern port cities of Chabahar, Konarak, Bandar Abbas and Sirik.After leaving a Nato summit in Turkey, Trump posted several videos on his social media site of what he said were explosions in Iran and issued another warning to the Islamic Republic.