Iran said that it carried out drone strikes against U.S. military vessels blockading its ports after the U.S. Navy attacked and seized an Iranian ship.

A day after the Strait of Hormuz was declared open, Iran has blocked it again, citing a U.S. "breach of promise," and has fired on ships.

The U.S. struck and seized an Iranian-flagged cargo ship in the Gulf of Oman, President Donald Trump said Sunday.