A collection of primary source documents from around the world related to the 1968 Prague Spring and the subsequent Warsaw Pact invasion of Czechoslovakia. The documents were originally obtained from the Central State Archive of Social Organizations of Ukraine, the Polish Institute of National Remembrance, the Russian State Archive of Contemporary History, and the National Archives of the Czech Republic, among other archives. The collection traces development of the democratization movement, the eventual military intervention, and the aftermath of the Soviet invasion. See also the Digital Archive collection on the Warsaw Pact. (Image, tanks in Prague)