عنوان مقاله [English]
نویسنده [English]چکیده [English]
International borders are conventional and credit lines which are basically established for the purpose of determining external limits of the land belonging to a government, hence they specify the framework of government's sovereignty and rule over people and the sources it owns. Experts and intellectuals attach different political, military, economical, and social functions and roles to international borders. Nevertheless, connoisseurs insist and believe that the most important function of border is to place a barrier and limitation against human, commodity and thoughts transmittance. The importance of the preventive and defensive function of border is due to the fact that neighboring countries are generally considered as sources of threat and governments try to render their borders impenetrable except for some lawful passages, so that their sovereignty will not be flawed and their country's social, economical, cultural and military security in different aspects won't be threatened. Different geographical, economical, political, geopolitical, social and cultural elements and variables influence the penetrability of border and the amount of unlawful transmittance across borders. Natural and geographical features of borders and borderline areas including topography the condition of mountains, climate, water, plant life, rivers and shared water sources, are variables which have an effect on the penetrability of borders and consequently on the security of borders and borderline areas. The present article aims to investigate the influence of natural elements (climate, plant life, rivers, lakes…) on the security and penetrability of eastern borders in Iran.