The Central Intelligence Agency said U.S. strikes had severely damaged Iran’s nuclear program, wading into the debate about the true impact of from U.S. action over the weekend.Defense Secretary Pete Hegseth said that a probe has been launched into how a preliminary assessment that said little damage had been done became public.

Israel and Iran entered a fragile ceasefire as President Trump called both countries out for violating it. Now, the conflict is taking center stage at the NATO summit. NBC News' Keir Simmons reports the latest updates.

Donald Trump says he expects the Iran-Israel truce to last forever. Our analysis of more than 2,000 truces suggests that’s optimistic