Russia Warns NATO of Nuclear Response Over Potential Kaliningrad Isolation

Russia has warned NATO that it is prepared to use its full arsenal, including nuclear weapons, if the alliance attempts to isolate Kaliningrad, according to a reported informal document.

The warning also raised the prospect of strikes on NATO decision-making centres, tying that threat to any effort to cut off the Russian territory.

The message was conveyed through an unofficial document rather than a formal public declaration. The available summary did not specify when it was delivered or which NATO officials received it.

The threat was framed as conditional on an attempt to isolate Kaliningrad. The summary provided no details of a NATO response or of any action taken to carry out the warning.