Ehsan Alini, Mohsen Alini
The occurrence of the Islamic Revolution in Iran, caused the fundamental changes in the structure of the political system of the country. The Islamic republic with its particular features was replaced to the political system of the monarchy for the first time. This process has had the profound impacts on the political, social, economic and cultural relations. Over the past four decades, the Islamic Republic has also gone through the various periods of time, and it is changed from a newly established system, to an experienced system with more political maturity.In the first part of this article, we will examine the features and characteristics of the government arising from the Islamic Revolution, and examine the differences and similarities with the previous governments. In the second part, we will examine the evolution of this government from 1978 to 2005 and examine the impact of these developments on the way in which the government exercises its power.