Investigation of the reason for omission of two movements of nationalist and left party from the revolution coalition after victory of Islamic Revolution of Iran

Coalition of political forces or the fighting movements on opposition with the existing regime have great importance in victory of revolutions. In our country, political movements or different ideologies went for coalition in order to fight with Pahlavi regime under leadership of Imam Khomeini. Leadership of Imam Khomeini and pioneering state of Islamists was the main factor for formation of this coalition. However, right after victory of left parties, the nationalists separated from revolution coalition and the path of Imam and as a result they were omitted. According to this the question of this paper is the reason for political movements’ non-believer to political Islamism from the Islamists by the leadership of Imam Khomeini. Our method of research in this study is case study and our method of analysis is detection of the historical process based on documents and our analysis base is the major political forces of these two movements. The findings of research are indicative that the studied forces entered conflict and confrontation in terms of ideology with the Islamism movement gradually after the early days of victory and in the process of institutionalization of revolution one after one and finally they were omitted.