US media is reporting Donald Trump secretly swapped planes as he left a NATO summit in Turkey last month, to evade a possible Iranian threat.
It's believed the US President boarded Air Force One in view of media, before being covertly moved to a military aircraft with the help of a catering truck.
The White House has not confirmed the secret switch, but reports claim it came after credible warnings.
US correspondent Dan Mitchinson says this move has prompted concerns after journalists and personnel were on board the original plane.
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