Presence of Russian warplanes at Deir Ezzor airport

After the military entry of the Syrian and Russian armies to east of the Euphrates in the last year, the Russian army wants to expand its military influence in east of Syria. According to available information, the Russian army is setting up a new military base in the Maadan region in the east of Syria.
Also, a part of Qamishli airport has been turned into the Russian air base, and the Russian fighter jets presence in Deir Ezzor is also interpreted in this regard.