Political, social and economic challenges of Population decline in Islamic republic of Iran

Population analysis or human force is a widespread discussion and it could study in from of different perspective .security researchers has studied effects of imbalance of population structure of countries including increasing of population age and how the future reaction of countries to this challenge. This Research Is Going To Answer This Question That What Is The Effect of Challenges And Population Changes on Iran Security. Findings of Research Shows That Population Subjects, Indirectly And Directly, Has Relation With Security Issues. It Also Has Important on Weak or Enhance of National Security. Population Having National Traits Is Effective Factor In Evaluation of Power And Security of Countries. We Can Survey Its Political Effectiveness In The Era of Policy.population is an mportant issues to development of countries. Method of this research is description-analytical and collection of informations is by using of library resources and documental survey.Key words: population changes, challenges, political power, national unity