Asharq Al-Awsat:

Russian forces have deployed a long-range air-defense system (S-300) in al-Tabqah airbase in Syria’s northeastern Raqqa governorate, where US forces were deployed after expelling ISIS, the Syrian Observatory for Human Rights reported.

By the end of 2018, Russia had deployed its S-300 system in Syria’s Deir Ezzor, which is under the control of the Syria regime. This took place at a time when the areas east of the Euphrates were in the hands of the US-backed Syrian Democratic Forces…

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