Public support for interventionist wars has always been weak. The cover story for these actions was always something about "spreading democracy" and "keeping America safe" this never really rang true.
Our current president just says it's about being a pirate, a bully, "taking the oil" ... There is no moral fig leaf. But, the premise, to me, is also obviously false.
"Taking the oil" hasn't made prices go down. Being a bully isn't really thriving or winning.