Recep Tayyip Erdogan, the President of Turkey, welcomed Donald Trump, the President of the United States, at Ankara airport on Tuesday. The U.S. president, who flew on the new “Air Force One,” landed in Ankara after an overnight flight from Washington. This was the first official, cross-border trip by the president with this new aircraft. President Trump is set to take part in the summit of NATO member countries, which will be held in Ankara.