Yeah, you need a Middle-East cheat sheet to track the players.
Russia is allied with Assad in Syria who is allied with Iran and fighting ISIS.
The Kurds are fighting against ISIS, Assad, and Erdogan.
Erdogan has no allies. Turkey is a NATO member state but the NATO charter doesn’t cover offensive actions in other nations. Turkey is Arabic+Islamic Sunni so the Iranians (Persians+Shi’ite) hate them.
Turkey hates the Kurds, hates Assad, hates the Russians (shot down a Russian MiG), hates Israel, and hates Iran.
There have been many peace summits in many places including some or all of the above players.
Often they would leave out Obama while he was in Office. Trump had a guy at the last one or one before, I think.
/s
Turks aren’t Arabs. They are descended from Altaic speaking Oguz Turkic tribes who migrated out of Central Asia to the northwest and Islamized and assimilated the local inhabitants of Anatolia.