President Donald Trump will decide in the next two weeks whether the U.S. will get involved in the Israel-Iran air war, the White House said on Thursday, raising pressure on Tehran to come to the negotiating table.

But behind the scenes, the president already knew an attack on Iran could be imminent - and that there might be little he could do to stop it, according to two U.S. officials. By mid-May, the Pentagon had begun drawing up detailed contingency plans to aid Israel if it followed through on its long-held ambition to strike Iran's nuclear program,