It’ll probably take 500,000 soldiers in Iraq and and outright colonisation of the country to “win.” A return of the draft would kill the war efforts in a minute.
As Zbigniew Brzezinski (a foreign policy hawk) said, “the fact is, the American effort in Iraq is essentially a colonial effort. We’re waging a colonial war. We live in the post-colonial era. This war cannot be won because it is simply out of sync with historical times.”