<prompt> Nyorera kupfuurira kweiyi ndima - Soviet Union yakatenda kuti nzira yekusunungura yaizogumisa hutongi hwehurumende munyika uye musi wa21 Nyamavhuvhu 1968, mauto eWarsaw Pact akapinda  <response>: . Gare gare, kururamisa kweSoviet nokuda kwokupinda kwacho kwaizozivikanwa seBrezhnev Doctrine. 