Rubuta ci gaba don wannan sakin layi - Jam'iyyar Kwaminis ta Czechoslovak ta fara shirin sauye-sauye a karkashin Alexander Dubček. Shirin da za a iyakance ikon tsakiya da kuma sanya tattalin arzikin ya zama mai zaman kanta daga jam'iyyar ya yi barazanar imani. A ranar 20 ga watan Agustan 1968, shugaban Soviet Leonid Brezhnev ya ba da umarnin mamayewa na soja
ta hanyar sojojin Warsaw Pact da suka lalata barazanar sassaucin ciki. A lokaci guda, Soviets sun yi barazanar ɗaukar fansa a kan mamayewar Burtaniya da Faransa da Isra'ila a Masar. Sakamakon shi ne rushewar duk wani hali na dakatarwa da kuma yin murabus na masu ilimi daga jam'iyyun kwaminisanci a Yamma.