The U.S. launched new airstrikes against Iran hours after President Donald Trump said recent Iranian attacks on ships in the Strait of Hormuz signaled the end of the ceasefire and threatened to escalate the conflict if they didn’t stop. Iran responded by targeting U.S.-allied Kuwait and Qatar and accused the U.S. of striking near its sole nuclear power plant. Back-and-forth attacks have repeatedly threatened the ceasefire, but Thursday’s appeared bigger all around. And Trump’s mixed messaging is fueling uncertainty about what comes next.