Pedzisa mutsara unotevera: Soviet Union yaidavira kuti muitiro wokusunungura waizogumisa hurumende yehurumende munyika uye musi wa 21 August 1968,
Mauto eWarsaw Pact akapinda. Gare gare, kururamisa kweSoviet nokuda kwokupinda kwacho kwaizozivikanwa seBrezhnev Doctrine.