U.S. to stop training Turkish F-35 pilots because of Russia deal: sources

The United States has decided to stop accepting any more Turkish pilots who had planned to train in the United States on F-35 fighter jets, three U.S. officials said, in a sign of an escalating dispute over Ankara’s plans to purchase Russian air defenses. The two NATO allies have sparred publicly for months over Turkey’s order for Russia’s S-400 air defense system, which Washington says poses a threat to the Lockheed Martin Corp F-35 stealthy fighters, which Turke