 Nyorai kupfuurira kweiyi ndima - Umambo hweYugoslavia hwakabatana neTripartite Pact musi wa25 Kurume 1941 pasi pekumanikidzwa neNazi Germany. Yokupedzisira yakatsvaka kudzivirira rutivi rwayo rwokumaodzanyemba pamberi pokurwiswa kwakarongwa kweSoviet Union, apo ichivimbisa kuwanikwa kwenzira dzekutakura uye hupfumi hwehupfumi muBalkans uko Hondo yeGreco-Italy yakanga ichienderera mberi. Mukupindura chibvumirano chacho, vakuru vakuru veRoyal Yugoslav Armed Forces vakaita coup détatachibvisa hurumende uye Prince Regent Paul. Mukuru mukuru weRoyal Yugoslav Air Force Dušan Simović akava mutungamiri wehurumende uye kutonga kwakabviswa nekuzivisa Peter II weYugoslavia wezera uye nokudaro mambo kunyange zvazvo aingova nemakore gumi nemanomwe chete. 