U.S. officials said the U.S. military used a B-1 bomber for the first time in the renewed conflict with Iran to conduct July 21 attacks on Islamic Revolutionary Guard Corps targets, Axios reported on July 22. In a July 23 Truth Social post, U.S. President Donald Trump threatened to hold Iran responsible for any additional attacks by the Houthi rebels, Iran's proxy force in Yemen, against commercial vessels in the Red Sea after the Houthis claimed two attacks on July 22.