The strikes followed a weekend in which the US and Iran traded fire, fuelling anxieties that the two countries are back on the brink of all-out war."These strikes will continue imposing a heavy cost on Iranian forces and degrade their ability to attack innocent civilians and commercial shipping in the Strait of Hormuz," the US military's Central Command posted online.In an earlier post on his Truth Social platform, Mr Trump said the US would become the "guardian" of the strait.He said all countries besides Iran "will have fair and open use of the Strait" But the US would impose the new charge to seek reimbursement for the costs of "providing safety and security to this very volatile section of the World".Iranian Foreign Minister Abbas Araghchi said Mr Trump was "absolutely right" that whoever provided safe transit through the strait should be paid."Iran has always been the GUARDIAN of the Strait and will remain so FOREVER," he wrote on X."20% is of course too much