If they just wanted a W, then they could have annihilated all of Iraq at any point in the last 30 years. Even without nukes.You don't have to have a war, there just needs to be a war.
That being said, the idea that America doesn't want to win wars because they want to keep them going only works if they keep them going. They definitely keep them going longer than they should, but they have more L's than they do W's and that only happens when a war ends.
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