Erdogan and Putin made a dirty deal:
* Putin bombs and expels Arabs from Idlib.
* Erdogan conquers 30 km border where most of the Syrian Kurds live, expels them and settles Arabs from Idlib in their houses.
But then US came in and stopped this deal. Erdogan was allowed to take only Arab populated portion.
As result of Erdogans lame policies Turkey is in trouble. Every time Putin will want something from Turkey he will use Kurds as terrorist tool. Also there is no place to settle Arab refugees now (Erdogan already have to Putin Ghouta, Hama and Aleppo).