It would be an illegal flight to escape prosecution or an ongoing trial. From the very first indictment the FBI has monitored the whereabouts of Trump's plane as well as any single vehicle or motorcade from his residence to the airport.
His plane can't fly non-stop to Dubai. Intercept and apprehension would take place at the refueling landing site.
I say his SS detail would undo the need for all of what I've just described as soon as they learned of Trump's itinerary.
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