Study: Wars could cost $4 trillion to $6 trillion

``Joseph Stiglitz, who received the 2000 Nobel Prize for Economics, and Linda Bilmes, a public policy professor at Harvard University, said the number of veterans seeking post-combat medical care and the cost of treating those individuals is about 30 percent higher than they initially estimated. That, combined with increases in the cost of military medical care and the lagging economy, will likely push the true long-term cost of the war over the $4 trillion mark.''