U.S. President Donald Trump says "there will likely be more" U.S. casualties during operations in Iran as military activity in the region continues. Three American troops have been killed so far, according to the U.S. military.

Iran's foreign minister says a new leader could be chosen "soon," after Supreme Leader Ayatollah Ali Khamenei was killed.

British Prime Minister Keir Starmer has agreed to a U.S. request to use British military bases for "defensive" strikes on Iranian missile sites.