Russia Issues Nuclear Threats Over Kaliningrad

November 2026
By Libby Flatoff

Russia condemned what it said were NATO plans to isolate or seize Kaliningrad, a strategic Russian exclave between Poland and Lithuania, and threatened to use nuclear weapons if that happened. The statements were issued in separate but similar social media posts Sept. 29 and Sept. 30 by the Russian Embassy in the United Kingdom and the Russian Embassy in Ireland, respectively.

“This is not fiction, but matter of grave concern to Russia. The irresponsible and shortsighted European political elite is playing a dangerous game,” the Russian Embassy in Ireland wrote. “There should be no mistake—Russia would be ready to use all its arsenal, including nuclear weapons, to defend its territory if NATO countries try to isolate Kaliningrad region from the rest of the country,” the post said. The embassy complained that from June to September, “there have been almost incessant NATO military exercises with the anti-Russian scenarios in Poland, Latvia, Lithuania, Norway, Finland, as well as in the Baltic Sea.” It further asserted that “the joint Lithuanian, Polish, French military exercise ‘Gallant Boar 2026’ stands out as specifically aimed at the Russian enclave [sic] of Kaliningrad at the coast of the Baltic Sea.”

Kaliningrad is a significant Russian territory that holds important military assets and is Russia’s only ice-free port on the Baltic Sea. The embassy in Dublin’s statement condemned all NATO drills that are, “preparing air and naval blockade of Kaliningrad and Kaliningrad region.”

Russia’s embassy in London also made the nuclear threat stating, “Any British or NATO military action against Russian territory would be met with all means at Russia’s disposal, including nuclear weapons.”

Reuters reported Sept. 30 that nuclear threats were also sent in a formal diplomatic note from Russia to NATO. NATO Secretary-General Mark Rutte responded with a statement, reported by Reuters, insisting that, “We are a defensive alliance. And stop the nuclear threats. This is absolutely not called for and not helpful.” He added that no NATO “exercises or activities pose a threat to the territory of the Russian Federation.”

Speaking at the Warsaw Security Forum Oct. 12, Gen. Alexus Grynkewich, NATO’s Supreme Allied Commander, was asked how the alliance could defend against and deter Russia. The American general replied: “we have no need and incentive to escalate. This means the burden of escalation would rest squarely upon the aggressor.… And here, we must ensure the adversary also knows that we have the advantage—that escalation will only worsen his position, both militarily and politically.”

Meanwhile, Lithuania successfully passed one of three votes required to repeal the country’s constitutional ban on hosting nuclear weapons within its territory Oct. 6. The final vote and decision are expected in January 2027.

If the other two votes are successful, Lithuania will become the second state in the region to take this step. Finland took similar action earlier this year in an effort to enhance European nuclear and military planning. (See ACT, April 2026.) Lithuania and Finland have denied any immediate plans to host nuclear weapons on their territories, however.

Lithuania has also been criticized by Russia for its willingness to finance a permanent U.S. military base within its borders. Lithuanian Prime Minister Mindaugas Sinkevičius posted on Facebook Oct. 6 that his country’s “partners simply need to make a political decision regarding the permanent deployment of troops, and Lithuania is ready to cover the associated financial costs.”

That same day, Reuters reported Kremlin spokesman Dmitry Peskov saying, “If the military infrastructure of what is, in effect, NATO’s leading country is moving closer to our borders, then, of course, this cannot be perceived as anything other than a step towards escalating tensions.”

Next year will mark the fifth anniversary of Russia’s invasion of Ukraine, a main source of tension between NATO and Moscow.