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Follow NBC News' live coverage as the U.S. and Israel attack Iran, Tehran hits back across the Gulf and Hezbollah strikes from Lebanon while Iran chooses a new supreme leader after the killing of Ayatollah Ali Khamenei.
Real time pushes:
U.S. expects more casualties, Joint Chiefs Chairman Dan Caine says, as Iran war widens. A 4th U.S. service member has died.
Gen. Caine says the U.S. should expect to take "additional losses" as Iran says it is prepared for a long war. Follow live updates.
U.S. officials said a fourth U.S. service member died, and declined to say how long the Iran operation would go on.
Tehran targets Qatari and Saudi energy facilities as Hegseth says Iran operation not to become 'endless war'
Iranians smuggle out forbidden messages revealing imminent plot that will flip everything on its head
Iran's drones cost $35k to make but $4m to shoot down as Western missiles are weeks from running out
Administration officials will brief congressional leaders today as they gear up for war powers votes
Pete Hegseth declares 'war is hell' with a battle-cry message for US warriors 'trained to kill'
Stock futures sank, setting up Wall Street for an ugly start to the week. Oil prices surged as the Iran conflict jolted markets.
Hegseth and the Joint Chiefs give live updates following U.S. strikes on Iran. Watch now.
