Ushakov: Putin and Erdogan talked at the meeting for at least two hours

"They talked for at least two hours one on one," RIA Novosti quoted Ushakov as saying.

He noted that further work continued with delegations.

Ushakov also said that such meetings usually last no more than two to three hours, while these negotiations took six hours.

The agreement between Moscow and Ankara was signed on October 22 in Sochi during the negotiations between the Russian and Turkish presidents.

The parties agreed to bring the Syrian military and the Russian military police into the zone outside the operation of Turkey "Source of Peace" in Syria.