North Atlantic Treaty Organization - NATO

The prospect of the Arctic Ocean emerging as a theater of military rivalry will create new challenges for the U.S. and NATO.

Close friend Bill Cohen said the defense secretary agonized over his decision.

The Secretary of Defense said that Putin's actions have become a catalyst for NATO countries to "rearm and to strengthen."

Iraq's prime minister declared "final victory" over ISIS last year, but intense fighting continues.

Marines are landing in Iceland, a carrier is sailing past the Arctic Circle and U.S. aircraft are soaring over Scandinavia.

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.