Turkey's Erdogan says Russia is on the verge of committing war crime in Syria

Turkey does not intend to stop shelling Syrian Kurdish YPG militia in response to cross-border fire, President Tayyip Erdogan said on Wednesday, adding the United State should decide whether it wants to back Turkey or the Kurdish insurgents.

The rapid of advance of U.S.-backed Syrian Kurdish fighters, who are taking advantage of Russian air strikes in the region to seize territory near the Turkish border, has infuriated Ankara, which sees the insurgents as a terrorist organisation. Turkey has been shelling YPG positions for days.

Erdogan also said that ignoring the link between Syrian Kurds and the outlawed Kurdistan Workers Party (PKK) was a "hostile act".