Turkey

Turkey's purchase of the so-called "F-35 killer" has begun despite retaliatory plans to boot it from the jet program.

Turkish Aerospace Industries on Monday unveiled its own next-generation fighter concept.

The U.S. Defense Department has given Turkey one last chance to cancel its planned order of the Russian-made S-400.

Turkey's commitment to acquiring Russia's S-400 anti-air system is unacceptable, Air Force Lt. Gen. Tod Wolters said.

The U.S. has halted shipments after the NATO ally refused to back down from its intent to purchase the Russian-made S-400.

Dunford said he's worked hard to improve relations with NATO-allied Turkey, but the S-400s could be a deal-breaker.

NATO's commander said Turkey shouldn't get F-35s if it also acquires a Russian missile system designed to shoot them down.

Attacking the SDF would be against Turkey's long-term interests, Trump said.

U.S. and Turkish military leaders are working together on a plan for U.S. withdrawal from Syria.

The Joint Chiefs chairman is assisting in the effort to dissuade Turkey from attacking U.S.-backed Syrian Kurds.