This goes back at least to the end of WW1 and the Sykes-Picot Treaty. France and Britain carved up the Middle East without regard to historical boundaries religious affiliations or tribal and family bonds. There will never be peace over there unless or until someone can unravel that Gordian Knot. We need to stay out of there.
That treaty was one of the worst mistakes the Europeans did to the world and now we are paying for it, but then again we kept digging the hole by our involvements and mark my words if Trump gets us into another BS war like the last two leaders, 2020 is gone.