Speaking in Ankara, Erdogan also said it was not possible to stay silent ono military attacks on Idlib town and he would continue to make necessary contacts with all parties in the region.

Idlib, in Syria's northwest corner, is the only big chunk of the country still in rebel hands after over eight years of war.

A truce in early August collapsed three days in, after which the Russian-backed Syrian army pressed an offensive and gained ground against rebel forces, some of whom are backed by Turkey.