“The Russian military exercises this March spanned the nation’s vast territory – from the high north, far above the Arctic Circle, all the way to territories near Japan. Massive NATO drills a few months later pulled thousands of troops across Europe. After decades of post-Cold War calm, Europe is again becoming a region of high military drama – and according to some experts, a place with a growing risk of accidental confrontation.”
Source: 3 maps that show how Russia and NATO might accidentally escalate into war – The Washington Post