Contrary to all international efforts to end the suffering of war and conflict and building a secure world, the second decade of the third millennium has had deep erosional crises as in previous decades. The Syrian crisis is the most prominent symbol of international tension that has had a continuous flow from 2001 and has become deeper every day and provided a security swamp for the people. There are a lot of assumptions about the starting and sustaining causes of this crisis and each one has focused on a particular component. The main purpose of this research is finding out the roots of the Syrian crisis. This research assumes that the Syrian crisis has internal aspects and that's related to political, economic and cultural structures and deep gaps in Syria. Ethnic-religious gaps along with economic and financial pressures on the Syrian people with a one-party authoritarian system of rulingby the Assad family for decades have led to unrest and the interference of regional actors such as Iran, Saudi Arabia, Turkey and trans-regional actors such as America, Russia and China has worsened the crisis. Thefactors involved in the Syrian crisishave led to deathand homelessness of thousands of people in Syria and made them seek refuge in other countries.
Syrian crisis, national, regional, trans-regional, ethnic gaps, Iran, America