Russia warns of nuclear response if NATO isolates Kaliningrad

Russia told NATO in a diplomatic document it is prepared to use "the entire arsenal of forces and capabilities at its disposal, including nuclear weapons" if the alliance attempts to isolate Kaliningrad, the Russian exclave on the Baltic Sea between Poland and Lithuania. The document also raised the possibility of strikes on NATO members' "decision-making centers" at the outset of a conflict. NATO rejected the allegations, saying the alliance is defensive.