Russia has warned that it could go to war with the West if NATO shoots down Russian fighter jets if they breach European airspace again.

NATO warned Russia on Tuesday that it would use "all necessary military and non-military tools" to ward off threats after several incidents in recent weeks where Russian jets or drones entered the ...

Last Friday, for the second time in less than two weeks and only the ninth time in history, Article 4 of the North Atlantic Treaty—NATO’s founding document—was invoked. While it was Poland that ...