Taint 3-5 trillion is what America alone spent on the Iraq war, and that doesn't include the decades of rehabilitating on all of the veterans coming home. I am counting the total cost to the entire world, including loss of life and health costs associated due to both wars. I don't think if you count everything (including rebuilding) 100 trillion is out of line. And for what? A single dictator and a guy who blew up the twin towers. Id think there would have been cheaper ways to rid the world of 2 people.