Russia

After looking at the relatively recent history between Russia and Ukraine, you start to understand the tensions.

The prospect of a nuclear exchange between Russia and the U.S. seemed, until recently, to have ended with the Cold War.

The Russian warning leans on language that echoes America’s own history of legally questionable imprisonment from the War on...

Poland's Ministry of Foreign Affairs announced that the country plans to deliver all of its Soviet-era fighter jets to a U.S...

"Russian combined-arms doctrine has generally advised against making cities primary objectives."

U.S. analysts believe as many as 4,000 Russian troops may have been killed in the 13 days since Russia invaded Ukraine.

"The performance of Ukraine's military has been surprisingly strong against the larger and better equipped Russian military."

U.S. national security leaders, a retired CIA official says, should expect a shock on the order of Japan’s sneak attack on...

The former Coast Guard cutter Cushing, commissioned by the Ukrainian Navy as the Sloviansk, was destroyed during an airstrike...