
This switch means that Israel, the U.S.’s closest ally in the Middle East, could be threatened from the southwest by the Egyptian ISIS group of Ansar Bait al-Maqdis in Sinai and by ISIS in southern Syria.
“If Israel was attacked by ISIS, America would expect a proportionate response by Israel, which is militarily capable of defending itself,” said Geoffrey Levin, a professor at New York University. “America would counsel against sustained Israeli involvement because it could threaten the tacit alliance between America, Iran, Turkey, and several Arab states against ISIS.”