More On Russia

Senators voiced concern that the Pentagon's new defense strategy could hurt the counterterrorism mission in Afghanistan.

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

It just shows that Russia cannot be counted on right now to keep its word," Defense Secretary Jim Mattis said.

The president threatened the action in response to Russia's seizure of three Ukrainian ships and the sailors aboard.

Russia and China have altered their strategies to counter the U.S. military, Dunford said.

A Russian Su-27 Flanker intercepted a U.S. EP-3 Aries signals reconnaissance aircraft over the Black Sea on Monday.

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