The United States stepped into Israel’s war against Iran early Sunday by dropping a 30,000 pound bomb on an uranium enrichment site buried under a mountain, a risky gambit that aimed to destroy the Islamic Republic’s nuclear program after months of failed diplomacy. The attack prompted fears of a wider regional conflict as Iran lashed out at the U.S. for crossing “a very big red line.” The U.S. also fired dozens of missiles from submarines — launched without congressional approval — and President Donald Trump said in a televised address from the White House that the combination of strikes “completely and fully obliterated” three nuclear sites. Hours later, Iranian Foreign Minister Abbas Araghchi said the time for diplomacy had passed and that his country had the right to defend itself.