A picture taken during a press tour provided by the Russian Armed Forces on September 12, 2017 shows a Russian Kamov helicopter flies near S-300 missile system at the Khmeimim military base in Latakia province, in the northwest of Syria. (Photo by AFP)
A handout picture released by the official Syrian Arab News Agency (SANA) on May 10, 2018 shows a Syrian army infantry-fighting vehicle (IFV) advancing through a street in al-Hajar al-Aswad as Syrian forces push against Daesh Takfiri terrorist group in the area on the southern outskirts of the capital Damascus. (Photo by AFP)
Syrian government soldiers drive an armored personal vehicle in al-Hajar al-Aswad, on April 22, 2018. (Photo by AFP)
Members of the so-called Syrian Democratic Forces (SDF) and US soldiers (L) gather at the al-Tanak oil field as they prepare to relaunch an attack near Abu Kamal in Dayr al-Zawr province, eastern Syria on May 1, 2018. (Photo by AFP)
An image released on May 10, 2018 by the government-affiliated "Central War Media" in Syria shows Syrian air defense systems intercepting Israeli missiles over Damascus. (Via AFP)