More On North Atlantic Treaty Organization - NATO

This comes just four days after another insider attack left an Afghan police chief dead and an American general wounded.

Russia has already condemned the Trident Juncture exercise as a needless provocation that "hasn't gone unnoticed."

Two F-35As are still slated to be delivered to Luke Air Force Base for the Turkish pilot training program.

Twice as many Marines will deploy to Norway next year and train near Russia, a move Moscow says will lead to retaliation.

Any move to permanently withdraw U.S. troops from Europe would ultimately require congressional authorization.

This year's Exercise Dynamic Mongoose involved more than 2,000 service members from 10 NATO countries.

The defense secretary lauds America's relationship with its allies as he accepted an award Wednesday night.

The suspension of F-35 sales to Turkey has become more likely after both the House and Senate opposed the deal.

Mattis said the U.S. commitment to NATO and members' pledges to mutual defense are "exactly as the president described it.

Despite strains in the U.S. relationship with Turkey, the Air Force says operations at the air base remain unaffected.