Twenty-one people were killed in Russian airstrikes on Wednesday, in the area of Deir al-Zor, according to the Syrian Observatory for Human Rights.

The war monitor said the strikes were set to support the Syrian Democratic Forces (SDF) fighting against ISIS.

Russia which supports the Syrian army by carrying out airstrikes, has been waging its own assault against ISIS.

Both the U.S-led coalition and the Russian military held several meetings to prevent clashes among them. However, they both came into conflict at certain stages.

Throughout Syria’s civil war, rebels from Eastern Ghouta have fought against government forces.

Due to the blockade on Ghouta by the government, living conditions have become dire, with food and medicine running short.

According to the U.N, around 350,000 people need immediate aid.