Sure, and I don't disagree with anything you said.
As you well know, at this point you can make pretty much ANY declarative statement about Syria, and it will have been true at some point in the last 10 years.
The point is that ISIS has a stated goal to have a land war between the "christians" and ISIS, at that specific location, according to prophecy.
So... walking into that situation with boots on the ground and guns blazing sure ain't the way to stop that from becoming the biggest radical Islamist recruiting tool ever invented by man.
The scariest thing is that Syria probably winds up getting partitioned up once Assad is assassinated and ISIS is squished like a bug, since there is nobody else with the strength to take over a tribal country with no infrastructure and no clear majority. Which then puts the entire eastern coastline of the Mediterranean in some serious shit like they have never seen before...
Syria is a Big Fucking Problem. And everything Putin has done has only made the problem worse.
Do you agree?