keyplus90: "Why not the whole world under US control? "
Rather more comprehensive than Marshwarble's question, but not far from the rather unpalatable truth
"US Foreign Policy Goals in Syria" [ fifth major subheading down,about ¼ scroll down]
https://gowans.wordpress.com/
{the entire article is long but well worth reading}
As for the two money grabbing Links re US accusing Syria of (oil) dealing with ISIS would put as much credence in them as in this Link which would NEVER be allowed to be shown in any Western MSM
https://www.transcend.org/tms/2015/11/raqqas-rockefellers-how-islamic-state-oil-flows-to-israel/