This is stated in the material CNN.
The author of the article believes that the memorandum reached at the talks between Moscow and Ankara shows that "there is no place for Americans in shaping the future of Syria."
The text says that "Washington is the biggest geopolitical loser in this deal," and "the quick withdrawal of American troops that left the Kurds at risk was a gift for Putin."
On October 22, a meeting between Putin and Erdogan took place in Sochi. During the negotiations, which lasted more than six hours, the parties managed to agree that from October 23 the Syrian military and the Russian military police will be introduced into the zone outside the Turkish operation in Syria.
Later, the Russian Ministry of Defense showed an infographic that reflects the main provisions of the memorandum of understanding between Moscow and Ankara on Syria.