Map of Syria here:
http://www.nationalreview.com/article/446504/syria-gas-attack-us-response-military-russia-isis-obama
Did not that Shia Cleric Sadr bedevil the US and Coalition efforts in Iraq during that invasion?
https://www.yahoo.com/news/powerful-iraqi-shiite-cleric-muqtada-164511535.html?.tsrc=jtc_news_index
Sadar has called for Assad to step down, in my view, the outcome the administration is seeking is not war but for Assad to step down, he is not viable anymore. Then, someone else, Alawite, steps in. Something like this was in the plans 2 years ago at the negotiations table.
Assad stays in power, more refugees flee to the west, there will not be peace with him in power; that appears to be the case. It seems even said that the civil war in a sense has been happening since 1983.
http://theresurgent.com/whats-americas-next-move-in-syria/
What I think they are looking at too, is a Pan Arabic and Turkish force would eventually go in, Syria will be partitioned, the Kurds should get some land of their own.
Trump is not Obama, all that with the Arab springs, saying Mubarak should step down was poppycock, Egypt is not Syria.