This article using this method, is going to Compare Islamic Revolution of Iran (1979) & Jan. 25th Revolution in Egypt, and assumes that without such an analysis, it's not possible to understand & explain Egypt Revolution. Theoretical Background of article is theory of Political opportunity from sociological framework for analysis of social movements. By Application of these theories, author argues that Islamic Revolution of Iran, provided a suitable political opportunity for revolutionary movement in Egypt & decrees as its costs & length in the way to victory. But Mubarak Regime, Egypt military forces & U.S. by learning from Iran's revolution, try their best to limit political opportunities for Islamists to conquer the whole political sphere of Egypt & manage the transition from Social Islamism toward Political Islamism.
)
