President Trump has approved an attack plan on Iran, but has held off in case Tehran agrees to abandon its nuclear program, an intelligence source and a defense official told CBS News.

Trump is weighing whether to join Israel’s strikes on Iran — including using bunker-busting bombs to target nuclear facilities deep underground.

President Trump’s political base is splintering over the prospect that the U.S. could join Israel’s assault on Iran—and the White House is trying to quell the backlash.