“They have even worked with parts of ISIS in cases”
All sides have worked with ISIS in Syria, to include the United States.
And yes, the only difference between Obama’s and Trump’s policy there is the fact we made significant gains against the Caliphate.
But we are still in bed with corrupt, murderous jihadis.
And for no good reason, at least not one that could wildly be construed as a national interest.
The ONLY interest the US has in Syria is stability. And that is best achieved by supporting Assad in his effort to gain control over the entire country.
It wasn't anything we did. By it's own nature ISIS would expand until it reached a tipping point, and then contract rapidly. It would have done the same thing if we did nothing.
NO! Actually, the instability has been in our interest. We "owned" a lot of the problems in the Middle East because of our past actions. The problem of Syria enabled us to get it of our hands, and it sucked all the energy out of the rest of the Middle East. It's a tragedy for the people there, but it's out chance to divest ourselves.
The U.S. has no interest in removing or supporting Assad. Our interest is in letting it now be our problem.
Why you think being Iran's tool and protecting their asset, and indirectly attacking Israel makes no sense to me.
By either supporting or opposing Assad, we are just making it worse for ourselves.