The U.S. Bombed Iran. Now What?

In an address to the nation on Saturday night, President Trump confirmed that the U.S. military had carried out an attack on Iran’s nuclear facilities. It was a move that he had been threatening for days, and that previous U.S. presidents had avoided for decades. David E. Sanger, the White House and international security correspondent for The Times, discusses whether the strike actually ended Iran’s nuclear program — or if America just entered a new period of conflict in the Middle East.