Mate, containment is not gonna work.
You couldn't finish taliban wit all your might and ISIS is much bigger, much sophisticated than taliban. So, of course air strikes won't do good in the long run. Infact, you are also killing local civilians while trying to target ISIS. Local support will just grow for ISIS.
About your question, mate until Assad goes Erdoğan won't be satisfied.
@
libertad
Bro, i think we are (as Turkish people) justifiying ourselves with saying that. That was at 90's lot of water passed under the bridge. You remember before the Syrian Civil war ?
Assad and Erdoğan were best buddies.
View attachment 119587
View attachment 119588
So what did change ? Frankly, i don't know, i have read many theroies. But not a convincing one yet.