Apart from the body count, which doesn't compute just taking Iraq's body count using Lancet report, we also have this:
In February, President Donald Trump estimated that "we have spent $7 trillion in the Middle East," saying "what a mistake" it was. Weeks later, he reportedly told his military advisers to prepare a plan to withdraw from Syria as the war against ISIS entered its final phases, though senior Washington officials have since expanded the U.S. mission— considered illegal by the Syrian government and its allies—to include countering Iran and its allies