 says if Hezbollah succeeds in striking a major target in Israel, it could trigger a regional war, one that he says could force U.S. intervention. New British Prime Minister Keir Starmer doesn't get to take much of a breather. After a six-week campaign, he is now getting straight to work, assembling his government, tackling a number of domestic issues, and putting his stamp on the U.K. relations with the rest of the world.