> Though I think you can put much of the blame of the civil wars staring on the US, even if you disagree the wars are still dramatically different than it would be without US support.
I think that's profoundly ignorant and belies lazy thinking, especially in relation to Syria.
The precise cause of the civil war was the domestic policies of the Assad regime [1] [2] [3] [4].
As for "providing the various sides with arms and support," I would be gobsmacked if you could show the US provided arms to Assad, especially in significant numbers. I recall significant dithering by the Obama administration over the level of support to give the rebels, and the fact that the US withheld arms to the rebels (over fears of inadvertently supporting Islamic extremists) is what allowed ISIS to grow so strong and eclipse the more liberal rebel groups.
> the wars are still dramatically different than it would be without US support.
If only because the support of other nations would have had a relatively greater effect [5].
[1] https://en.wikipedia.org/wiki/Course_of_events_of_the_Syrian...
[2] https://en.wikipedia.org/wiki/Timeline_of_the_Syrian_Civil_W...
[3] https://www.nytimes.com/2011/03/26/world/middleeast/26syria....
[4] https://carnegieendowment.org/2016/11/22/syria-s-path-from-c...
[5] https://en.wikipedia.org/wiki/Foreign_involvement_in_the_Syr...