Explanation of the subject: Iran's history, especially in recent centuries, has witnessed extensive and inclusive developments which in most cases have been affected by religious beliefs and teachings.

Issue/Question: This research seeks to answer the question of what constructive or destructive role the policy of religious tolerance of Afshariya and Zandiye statesmen has played in strengthening or destroying national authority.

Purpose: Therefore, the current research aims to investigate the role of the religious policies of Afshariya and Zandiye statesmen according to the conditions and situations in the growth of knowledge the development of Iran's military and defense authority.

Method: The present research was carried out in a descriptive-analytical and library method, and by examining the background of the research it was recognised the contribution of religious and religious politics in strengthening national authority the pathology of religious policies and its relationship with national authority highlighting the historical experience of Iranian statesmen in We used religious politics.

Results: During the Safavid era, the official religion of Iran was declared to be Shia, and the Safavids despite all the difficulties they faced in this way overcame their formality did not accept the Shia religion. supported and did not recognize Sunni religion.