A former Middle East envoy in President Trump's first administration said Wednesday that he believes the United States is preparing to strike Iran's Fordow nuclear enrichment facility in the coming days.

"What I can see is the military maneuvers are getting in place," Brett McGurk told CNN's Pamela Brown on Wednesday. "I think we are gearing up for a strike ... a U.S. military strike."

Iran's secretive Fordow nuclear plant is located deep in a mountain south of Tehran, requiring the use of a so-called

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