Russian Security Council Deputy Chairman and former President Dmitry Medvedev declared on Thursday that if Sweden and Finland join NATO, there can be no more talk of a nuclear-free Baltic, and that Russia will take retaliatory measures.

The North Atlantic Treaty Organization (NATO) was created in 1949 by the United States, Canada, and several Western European nations to provide collective security against the Soviet Union.

Meanwhile, the further expansion of NATO has been viewed as a threat to Russia.

Russia has been warning former Soviet Union state countries against joining NATO.