Watch live: Trump addresses nation after U.S. military strikes on Iran nuclear facilities

President Donald Trump says the U S military struck three sites in Iran directly joining Israel s effort to decapitate the country s nuclear operation in a risky gambit to weaken a longtime foe amid Tehran s threat of reprisals that could spark a wider regional conflict The decision to directly involve the U S comes after more than a week of strikes by Israel on Iran that have moved to systematically eradicate the country s air defenses and offensive missile capabilities while damaging its nuclear enrichment facilities But U S and Israeli executives have noted that American stealth bombers and a -lb bunker buster bomb they alone can carry offered the best chance of destroying heavily-fortified sites connected to the Iranian nuclear venture buried deep underground Iran s state-run IRNA news agency early Sunday acknowledged an attack on the country s Fordo nuclear site The Associated Press is providing a livestream of Trump s p m ET address to the nation Watch below