 Nyorai kupfuurira kweiyi ndima - Masimba eAxis akapinda muHumambo hweYugoslavia musi wa6 April 1941. Nyika yacho yakazviisa mumaoko evavengi mazuva 11 gare gare, uye hurumende yacho yakabva yaenda kunze kwenyika, pakupedzisira ichienda kuLondon. Nazi Germany, Fascist Italy, Bulgaria neHungary zvakabatanidza mativi enyika yacho. Nzvimbo yakasara yakakamurwa: yakawanda yacho yakarongwa seNyika Yakazvimirira yeCroatia NDH, nyika yemadhongi yakasungwa nemauto eGerman neItaly, nepo guta guru reBelgrade rakaramba riri muNzvimbo yeMukuru wemauto muSerbia. USSR, ichiri kukudza Chibvumirano cheMolotov-Ribbentrop, yakagura ukama nehurumende yeYugoslavia uye yakatsvaka, kupfurikidza nemidziyo yayo yezvitsvakurudzo, kugadza sangano idzva reCommunist rakazvimirira neKPJ muNDH. USSR yakabvumirawo nenzira isingatauri kudzorerwazve kweBhurgaria Workers Party. Kunyanya, sangano idzva rebato nenzvimbo yekushanda zvakagadziriswa kuti zviverenge kubatanidzwa kwenzvimbo dzeYugoslav neBulgaria. USSR yakangochinja rutsigiro rwayo nokuda kwezviito zvakadaro muna September 1941 - zvakanaka pashure pokutanga kwehondo yeAxis yeUSSRmushure mekuratidzira kwakadzokororwa kubva kuKPJ. 