The U.S. struck Fordow, roughly 60 miles south of Tehran, as well as the Natanz complex to the southeast and Isfahan, southwest of Natanz, Trump said. The president hailed the attacks as a "spectacular military success," adding: "Iran's key nuclear enrichment facilities have been completely and totally obliterated."

The world grappled Sunday with the enormous implications after the United States inserted itself into Israel's war against Iran with an attack that raised urgent questions about what remained of Tehran’s nuclear program and how its weakened military might respond.

The future of Iran’s nuclear program will depend in part on the extent of the damage from the U.S. attacks and Tehran’s negotiating position in the coming days.