Russia is considering arming its Baltic fleet with nuclear warheads for the first time since the cold war, senior military sources warned last night.

The move, in response to American plans for a missile defence shield in Europe, would heighten tensions raised by the advance of Russian forces to within 20 miles of Tbilisi, the Georgian capital, yesterday.

Under the Russian plans, nuclear warheads could be supplied to submarines, cruisers and fighter bombers of the Baltic fleet based in Kaliningrad, a Russian enclave between the European Union countries of Poland and Lithuania. A senior military source in Moscow said the fleet had suffered from underfunding since the collapse of communism. “That will change now,” said the source.

Russia’s new nuclear challenge to Europe