The Syrian government army entered the territory of the province of Raqqa, the administrative center of which is the actual capital of the "Islamic State" (the organization is recognized as a terrorist organization in Russia and banned). The attack by the Syrian army is reported by the Syrian Observatory for Human Rights, headquartered in London.
According to the Syrian Observatory, Syrian troops are advancing with the support of Russian aircraft, which delivers massive strikes. There has been no official confirmation of this information from Syria or Russia.