Ukraine

"The Sept. 11, 2001, attacks brought changes in the United States' military position as it shifted focus to Central Asia and...

"In light of Russia's annexation of Crimea and its current threat to Ukrainian sovereignty, it's fair to ask: What is the...

The alert order was issued to units now in the U.S. that would be part of a NATO force if the alliance decides to activate a...

"The CIA and the Green Berets are preparing Ukraine for guerrilla war, while Washington eyes other Russian weak points."

"U.S. cyber and space assets probably can't win the war for Ukraine, but they can definitely hurt Russia."

Add Kazakhstan to the list of former Soviet republics whose independence is now being threatened by Russia.

Women between 18 and 60 who are "fit for military service" and work in a broad range of professions are required to register...

The threats posed by Moscow and Minsk have increased sharply in the last couple of months.

"Putin is determined to compel Europe to revisit the spheres of influence formula, with Russia gaining a key vote on the...

Austin’s comments at the Reagan National Defense Forum come amid reports that U.S. intelligence has found Russia is planning...