After repeat warnings, the Red Army and the troops of four other...
The End Of Prague Spring On 1968. After repeat warnings, the Red Army and the troops of four other member countries of the Warsaw Pact (Hungary, Poland, Bulgaria and GDR) invaded Czechoslovakia beginning August 20 and 21, 1968. The Soviet Army progressively put an end to the popular demonstrations of the Prague Spring. (Photo by Keystone-France/Gamma-Keystone via Getty Images)