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U.S. officials: Iran threatened terror attacks inside U.S.

NBC News has learned that Iran sent a message to President Trump at the G7 summit that if he ordered strikes on Iran’s nuclear facilities, then Iran could activate sleeper cells in the U.S. to launch terror attacks, according to two U.S. officials. President Trump said the U.S. strikes ‘completely obliterated’ Iran’s nuclear program. NBC News’ Peter Alexander reports.