Afghanistan Issue Thirty Years (1979-2009): Geopolitics, Nationality and Religion

　　Abstract: During thirty years (1979-2009), Afghanistan has been in war and conflict at all times, and Afghanistan people have suffered a lot from bleeding and death of war. Afghanistan’s war and conflict were caused by many factors, but there was no doubt that geopolitics, nationality and religion were the three key factors that affecting Afghanistan’s situation. This paper attempts to analyze the causes of Afghanistan’s long-time war and conflict in the view of geopolitics, nationality and religion so as to find the root of Afghanistan issue.