Ka cika wannan jumlar: A shekara ta 1945, Chňoupek ya zama memba na Jam'iyyar Kwaminis ta Czechoslovakia. Tun daga 1948 ya yi aiki a matsayin dan jarida. Bayan shan kashi na Prague Spring, ya zama memba na Kwamitin Tsakiya na Jam'iyyar Kwaminis kuma ya sami manyan mukamai na gwamnati: 1969<unk>70 shugaban gidan rediyon jihar, 1970<unk>71 jakada a Tarayyar Soviet, 1971<unk>1988 ministan harkokin waje. Chňoupek koyaushe yana tallafawa siyasar Tarayyar Soviet, gami da kamfen na perestroika a ƙarshen 1980s. Bayan da
faduwar gurguzu a Czechoslovakia a shekarar 1989, 'yan sanda sun binciki shi saboda cin zarafin iko kuma ya kwashe shekara shida a kurkuku.