Over the past week, President Trump claimed he would make a decision about Iran in “two weeks” and repeatedly pressed it to come to the negotiating table. But the swiftness of the attack on Saturday night suggests that plans were underway after Israel began its bombing campaign against Iran a little more than a week ago.

President Trump spent the first months of his term holding back Israel’s push for an assault on Iran’s nuclear program. With the war underway, he has now expressed support for Israel. Jonathan Swan, a White House reporter for The New York Times, breaks down how the president got to this point.