stationed, but they are now signatories of the Nuclear non-proliferation treaty. Timeline Foreign military aid In addition to explicit wars, the Soviet military took part in a number of internal conflicts in various countries, as well as proxy wars between third countries as a means of advancing their strategic interests while avoiding direct conflict between the superpowers in the nuclear age (or, in the case of the Spanish Civil War, avoiding a direct conflict with Nazi Germany at a time when neither side was prepared for such a war). In many cases, involvement was in the form of military advisors as well as the sale or provision of weapons. See also List of military aircraft of the Soviet Union and the CIS Missiles of Russia and the USSR List of Soviet tanks Russia involvement in regime change Timeline of Russian inventions and technology records Notes References – Soviet Union Crozier, Brian: The Rise and Fall of the Soviet Empire. Forum, 1999. Koenig, William and Schofield, Peter: Soviet Military Power. Hong Kong: Bison Books, 1983. Odom, William E.: The Collapse of the Soviet Military. New Haven & London:Yale University Press, 1998. Stone, David R.: A Military History of Russia: From Ivan the Terrible to the War in Chechnya. Westport: Praeger Security International, 2006. Malone, Richard: The Russian Revolution. Cambridge Press 2004 Blackett, P.M.S.: Fear, War, and the Bomb, Military and Political Consequences of Atomic Energy New York: Whittlesey House 1949. Alperovitz, Gar: Atomic Diplomacy: Hiroshima and Potsdam, New York, Simon and Shus Choudhury, Soumen Dhar, Strategic doctrine from Khrushchev to Gorbachev, (unpublished PhD thesis, JNU,1996) Further reading Robin Higham and Frederick W. Kagan (editors), 2002. The Military History of the Soviet Union (Palgrave, New York).