The United States has entered Israel’s war against Iran. American warplanes dropped bombs on three nuclear sites in Iran on Saturday, President Donald Trump announced, bringing the U.S. military directly into the war after days of uncertainty about whether he would intervene.

Iranian Foreign Minister Abbas Araghchi warned that any military action by the U.S. in the escalating war with Israel would be "very, very dangerous for everybody."

The US is the only Air Force with the capability to launch so-called “bunker buster” bombing – this enables them to hit targets deep underground.