Business Insider got access to a NATO AWACS flight for an eight-hour surveillance mission over Eastern Europe.

President Trump’s threats have raised questions about how much leverage the United States has left with Moscow.

NATO's enhanced ground capabilities in the Baltic region spark Russian warnings as military focus intensifies on Kaliningrad and the strategic Suwalki Corridor

Russian soldiers call the practice a sacrifice to Baba Yaga, a fearsome witch from Slavic folklore who feasts on her victims.

The Ukrainian air force said Russia launched two Iskander-M ballistic missiles along with 37 Shahed-type strike drones and decoys at Ukraine overnight. It said 32 Shahed drones were intercepted or neutralized by Ukrainian air defenses.

Russian President Vladimir Putin's war in Ukraine and President Trump's tough stance on NATO have 'energized' the alliance into action, experts explain unique circumstances that led to unprecedented commitments.

General Christopher Donahue, commander of U.S. Army Europe and Africa, said allies could seize Kaliningrad "in a timeframe that is unheard of."

You might want to call Vladimir and say, ‘Hey, friend, we are still buying stuff from you, but you have got to get serious when it comes to these negotiations on the cease-fire or a peace

Russian tourists are being granted holiday visas in NATO countries in a move Ukrainian officials have branded "disturbing" and a security risk.