Turkey's Role in the Syrian Crisis and Its Impact the Foreign National Security of Iran

In the recent decades the West Asian countries have faced with complicated military and security challenges. The United States and its allies followed their interests and strategies in West Asia in different ways. Destabilize the security environment surrounding Israel is one of the most important U.S goals in this region. The U.S and the West's strategy to generate internal crisis and instability in Syria, began in 1390, in accordance with changes in the West Asia for influencing the resistance groups. And in this regard, countries such as Turkey, Qatar and Saudi Arabia accompanied the U.S and the West in intervention in Syria, and provided the Syrian opposition with weapons and financial support. This study was an attempt to examine the role of Turkey in the Syrian crisis on the basis of the offensive realism theory, and hypothesized that The continuation of this role, in addition to the impact on bilateral relations, between Turkey and Iran, threaten Iran's national security, including the Islamic Resistance, influence and regional power, strategic depth and military security of the Islamic Republic of Iran .The research is conducted using descriptive-analytic and library collection techniques. By Bringing up the Syrian crisis's internal and external factors, Turkey weaponry and educational aid to the Syrian opposition, and Iran and Turkey foreign policies, the stud analyzed the effects of this crisis on Iranian foreign national security.