The cost of providing medical and disability care for veterans of the Iraq and Afghanistan wars is growing with each passing day, and peak spending will not occur for another 30 to 40 years. The two wars are likely to be the most expensive in the history of the United States. According to a 2013 study by Linda Bilmes of the Harvard Kennedy School, the U.S. will spend $4 trillion to $6 trillion on these wars, including military operations and veterans’ health care.