Rubuta ci gaba don wannan sakin layi - Bayan Yaƙin Duniya na II da kuma goyon bayan Soviet-Soviet da ke goyon bayan Soviet a watan Fabrairun 1948, Czechoslovakia ya zama wani ɓangare na Soviet-led Eastern Bloc kuma yana ɗaya daga cikin mambobin kungiyar Warsaw Pact a watan Mayu 1955. A watan Agustan 1968, a matsayin martani ga gyare-gyaren dimokiradiyya na Prague Spring na gwamnatin Czech, mamayewar da Soviet ta jagoranta
ya sake kafa mulkin kwaminisanci mai tsauri ta hanyar karfi. 108 Czech da Slovaks sun mutu kuma kimanin 500 sun ji rauni sakamakon sakamakon mamayewar. Wannan ya lalata dangantakar tsakanin kasashen biyu.