More On Ukraine

Thirteen months after Russia began its occupation of Crimea, the United States and its European allies must remain steadfast.

The U.S. and its NATO allies have trained with the Ukraine military and pumped millions of dollars into that country's...

The Russian buildup of military forces threatening Ukraine was real and Moscow’s denials were baseless, NATO officials said.

Western allies bolstered Eastern Europe defenses as Ukraine pressed an offensive against pro-Russian militants.

Troops from the 173rd Airborne Brigade will join in allied military exercises in Ukraine next week.

Army Gen. Curtis M. "Mike" Scaparrotti toured the combat positions of Ukrainian troops facing off against Russian troops.

The U.S. said Moscow must stop backing pro-Russian militants in eastern Ukraine or face tougher economic sanctions.

Defense Department funds bought supplies including concertina wire for Ukraine's border guards.

The U.S. Army is working to glean intelligence on Russian military technology from the conflict between pro-Russian...