There are some good points here, but I'm not sure some of these numbers are correct. My understanding about the war in Iraq (and maybe Afghanistan as well) is that a lot of those costs were paid through "off-budget expenditures" that are probably impossible to document accurately.
It's no coincidence that this country's economy began to see the first signs of some serious turbulence back in the mid-2000s when the Federal government stopped reporting one of the key indicators of our nation's money supply (M3).