A lokacin yakin duniya na biyu , yayin da sojojin Jamus suka samu nasara a kan Tarayyar Soviet , gwamnatin Iran, tana tsammanin nasarar Jamus, ta ki amincewa da bukatun Birtaniya da Soviet na korar mazauna Jamus.Wannan ne ya kai ga mamaye kasar Iran a watan Agustan shekarar 1941 karkashin Operation Countenance, inda suka yi nasara a kan raunanan sojojin Iran.Manufar farko ita ce tabbatar da rijiyoyin mai na Iran da kafa hanyar Farisa, hanyar isar da saƙo zuwa Tarayyar Soviet.Duk da mamayewa da mamaya, Iran ta ci gaba da kasancewa a hukumance na tsaka mai wuya.An kori Reza Shah a wannan sana'a kuma dansa Mohammad Reza Pahlavi ya maye gurbinsa.^[82]Taron na Tehran a shekara ta 1943, wanda ya samu halartar kasashen kawance, ya haifar da sanarwar Tehran, inda aka tabbatar da ‘yancin kai da kuma cikakken yankin kasar Iran bayan yakin.Duk da haka, bayan yakin, sojojin Soviet da ke arewa maso yammacin Iran ba su janye cikin gaggawa ba.A maimakon haka, sun goyi bayan tayar da kayar baya da ta kai ga kafa kasashe masu neman ballewa daga Tarayyar Soviet a Azarbaijan da Kurdistan Iran - gwamnatin jama'ar Azarbaijan da Jamhuriyar Kurdistan, a karshen shekarar 1945. Zaman Soviet a Iran ya ci gaba har zuwa watan Mayun 1946. , wanda ya ƙare ne bayan Iran ta yi alkawarin rangwame mai.Duk da haka, ba da da ewa ba aka kifar da Jamhuriyar Soviet, kuma daga baya aka soke yarjejeniyar man fetur.^[83]