Ayatullah Ruhollah Khomeini ya kasance jigo a Iran tun daga kafuwar Jamhuriyar Musulunci ta Iran a watan Afrilun 1979 har zuwa rasuwarsa a shekara ta 1989. Juyin juya halin Musulunci ya yi tasiri matuka a kan fahimtar Musulunci a duniya, wanda ya haifar da sha'awar siyasar Musulunci da ruhi, amma kuma ya haifar da tsoro da rashin yarda da shi. Musulunci musamman Jamhuriyar Musulunci da wanda ya kafa ta.^[106]Juyin juya halin ya zaburar da ƙungiyoyin Islama da adawa da tasirin yammacin duniya a duniyar musulmi.Manyan abubuwan da suka faru sun hada da kwace masallacin Harami na Saudiyya a shekarar 1979, kisan gillar da aka yi wa shugabanMasar Sadat a 1981, tawayen kungiyar 'yan uwa musulmi a birnin Hama na kasar Siriya, da kuma harin bam da aka kai a Lebanon a shekara ta 1983 da aka yi wa sojojin Amurka da Faransa .^[107]A tsakanin shekarar 1982 zuwa 1983, Iran ta yi jawabi kan abubuwan da suka biyo bayan juyin juya halin Musulunci da suka hada da tattalin arziki, soja, da sake gina gwamnati.A cikin wannan lokaci, gwamnatin ta murkushe tashe tashen hankula daga kungiyoyi daban-daban wadanda a da suke kawance amma suka zama abokan hamayyar siyasa.Wannan ya kai ga kashe abokan hamayyar siyasa da dama.Tawayen da aka yi a Khuzistan, Kurdistan, da Gonbad-e Qabus da masu kishin Markisanci da na tarayya suka yi ya haifar da rikici mai tsanani, tare da tsawaita zanga-zangar Kurdawa musamman kuma ta yi sanadiyar mutuwar mutane.Rikicin yin garkuwa da Iran, wanda ya fara a watan Nuwamba 1979 tare da kwace ofishin jakadancin Amurka a Tehran, ya yi tasiri matuka ga juyin juya hali.Rikicin dai ya janyo katse huldar diflomasiyya tsakanin Amurka da Iran, da takunkumin tattalin arziki da gwamnatin Carter ta kakaba mata, da kuma yunkurin ceto kasar da bai yi nasara ba, wanda ya karawa Khumaini kwarin gwiwa a Iran.An sako mutanen da aka yi garkuwa da su a watan Janairun 1981 bayan yarjejeniyar Algiers.^[108]An samu sabani na cikin gida game da makomar Iran bayan juyin juya hali.Yayin da wasu ke hasashen gwamnatin dimokuradiyya, Khomeini ya yi adawa da wannan ra'ayi, yana mai cewa a cikin Maris 1979, "kada ku yi amfani da wannan kalmar, 'dimokradiyya.'Wannan shi ne salon Turawan Yamma”.^[109] Ƙungiyoyi da jam'iyyun siyasa daban-daban, ciki har da National Democratic Front, gwamnatin wucin gadi, da Mujahedin Jama'ar Iran, sun fuskanci takunkumi, hare-hare, da tsarkakewa.^[110]A cikin 1979, an tsara sabon kundin tsarin mulki, wanda ya tabbatar da Khomeini a matsayin Jagoran koli mai iko mai yawa da kuma kafa majalisar malamai ta masu gadi mai kula da dokoki da zabe.An amince da wannan kundin tsarin mulki ta hanyar kuri'ar raba gardama a watan Disamba 1979. ^[111]