By
/ CBS News
President Trump departed the NATO summit in Turkey earlier this month on the old Air Force One jet — rather than the newer plane donated by Qatar — following a credible threat to the president from Iran and allied proxy groups, U.S. officials told CBS News.
The officials told CBS News that the U.S. detected a credible plot to fire a missile at the plane.
The news of threats from Iranian proxies was first reported by The New York Times.
This is a breaking story; it will be updated.
