<prompt> Nyora kupfuurira kweiyi ndima - Musi wa 12 Kubvumbi 1967 akaitwa Mutevedzeri Wekutanga weGurukota rezvekudzivirirwa kweUSSR panguva imwecheteyo nekugadzwa kwaAndrei Grechko seGurukota rezvekudzivirirwa uye Marshal weSoviet Union, nepo kubva muna Chikunguru wegore iro iro akaenderera mberi akabata chinzvimbo chemukuru mukuru wemauto eWarsaw Chibvumirano. Muchinzvimbo ichi, akatungamira kugadzirira kwemauto kwekupinda kweWarsaw Chibvumirano cheCzechoslovakia  <response>: Muna August 1968. 