Nyorai kupfuurira kweiyi ndima - vachinji veCzechoslovak havana kuvavarira kubvumira kutamba kwakasununguka kwesimba remusika. Vakanga vangoshandisa chikamu bedzi chepurogiramu yavo pakasvika August 1968, apo mauto eSoviet namamwe mauto eWarsaw Pact akapinda munyika yacho
uye kuedza kworusununguko kwakaguma. Makore maviri akatevera akaona kuparadzwa zvishoma nezvishoma kwechikamu chikuru chepurogiramu yacho. Pakutanga kwema1970, inenge miitiro yose yezvirongwa zveshanduko yakanga yanyangarika.