The main Syrian opposition alliance dubbed as "hostile" forces Wednesday Kurdish groups that control large swathes of the country’s north after they proclaimed provisional self-rule.

The main Syrian opposition alliance dubbed as "hostile" forces Wednesday Kurdish groups that control large swathes of the country's north after they proclaimed provisional self-rule.

The Kurds, dominated by the Democratic Union Party (PYD), sister party of veteran Turkish rebel group the Kurdistan Workers Party (PKK), have held the Afrin region of northwestern Syria and big chunks of the northeast for more than a year.

On Monday, they announced that after talks in  Qamishli, on the Turkish border, they had decided to declare provisional self-rule in areas under their control.

Mounting violence between the Kurds and the terrorist groups has sparked a deepening rift between them.

"The PYD is a group hostile to the Syrian revolution," the Saudi-backed National Coalition said in its statement formalizing the breach with the main Kurdish militia.

It accused the main Kurdish faction of "attacking units of the Free Syrian Army and of shirking the struggle against the Syrian government."