According to Brown University's Cost of War project, between 480,000 and 507,000 people have been killed in the United States’ post-9/11 wars in Iraq, Afghanistan, and Pakistan. Most of the dead were civilians. [PDF] https://watson.brown.edu/costsofwar/files/cow/imce/papers/2018/Human%20Costs%2C%20Nov%208%202018%20CoW.pdf …
Failed? The war has SUCCEEDED at extracting 5.9 trillion in revenue for the ruling class. "taxes were not raised to carry on wars, but that wars were raised to carry on taxes." — Thomas Paine