"In reaction to West Germany's NATO accession, the Soviet Union and its Eastern European client states formed the Warsaw Pact in 1955." Citation from: NATO website. "A short history of NATO". nato.int. Archived from the original on 26 March 2017. Retrieved 24 December 2015.
"In reaction to West Germany's NATO accession, the Soviet Union and its Eastern European client states formed the Warsaw Pact in 1955." Citation from: NATO website. "A short history of NATO". nato.int. Archived from the original on 26 March 2017. Retrieved 24 December 2015.