When  did the revolutionary wave which  Syria enjoyed an improvement in relations with several of the states in its region in the 21st century, prior to began
Foreign relations of Syria Ensuring national security, increasing influence among its Arab neighbors, and securing the return of the Golan Heights, have been the primary goals of Syria's foreign policy. At many points in its history, Syria has seen virulent tension with its geographically cultural neighbors, such as Turkey, Israel, Iraq, and Lebanon. Syria enjoyed an improvement in relations with several of the states in its region in the 21st century, prior to the Arab Spring and the Syrian Civil War.
2017 Deir ez-Zor missile strike On 18 June 2017, under Operation Laylat al-Qadr (Persian: عملیات لیلةالقدر‎ ‎ ), Iran's Islamic Revolution Guards Corps (IRGC) fired six surface-to-surface mid-range ballistic missile from domestic bases targeting ISIL forces in the Syrian Deir ez-Zor Governorate in response to the terrorist attacks in Tehran earlier that month. Next day, the IRGC published aerial videos recorded by the Damascus-based IRGC drones flying over the city during the operation, confirming that the missiles had successfully hit the targets with precision. The attack constituted the first operational use of Iran's ballistic missiles since the Iran-Iraq war of the 1980s.