Turkey

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.

The sale is unconfirmed, as the country already has agreed to buy Russia's S-400 "F-35 Killer" system.

The Turkish military will move into Syria “within days” to target terror organizations, Turkey's president said.

A Russian map company has inadvertently revealed secret foreign military bases -- by blurring them out.

Turkish President Recep Tayyip Erdogan lashed out Tuesday against the U.S. troop presence in eastern Syria

U.S. troops will set up observation posts in northern Syria to help prevent partisan infighting.