Russia has warned Nato that it would be ready to resort to nuclear weapons if the Western alliance tried to cut off or attack the Russian region of Kaliningrad. It’s a highly militarised exclave — separated from the main mass of Russian territory — that is wedged between Nato members Poland and Lithuania and also borders the Baltic Sea. It has a population of about 1mn and is slightly bigger in area than the US state of Connecticut.Kaliningrad, formerly the German city of Königsberg and capital of East Prussia, became part of the Soviet Union after the Red Army captured it in April 1945 and the victorious allies divided East Prussia at the end of World War II. It provides Russia with a platform for air defence, missile and naval forces that can project power deep into northern and central Europe. At the same time, it is a potentially vulnerable pressure point for Moscow because of its boxed-in location between two Nato states and the difficulty of maintaining supply lines or reinforcing it in the event of a war.These have been rising steadily since Russia’s 2022 invasion of Ukraine, which led Nato to move decisively to strengthen its eastern flank. The alliance has expanded in the region, with Finland and Sweden joining in 2023 and 2024 respectively. Russia perceives a growing Western threat to Kaliningrad.A Western military source told Reuters that dozens of aircraft from Nato members were involved in an unannounced operation in the airspace around Kaliningrad in mid-August, demonstrating the capability to cut off the exclave’s radio and radar links as well as its air defences in the event of a conflict with Russia.European states have been walking a fine line since 2022 — supporting Ukraine with weapons, intelligence and sanctions against Russia while stopping short of joining the conflict themselves — though Moscow said this week they are already “waging war” against it.Security analysts say any miscalculation could lead to a direct military confrontation - and Kaliningrad, by virtue of its location, would be a potential flashpoint. Among the possible triggers could be drone incidents, disruption of critical infrastructure, major new missile deployments or anything perceived by Moscow as amounting to a Nato attempt to impose a blockade on the exclave. — Reuters