"Combined with the unprecedented wave of anti-Americanism that resulted from the war, the invasion -- according to U.S. intelligence agencies -- has resulted in a backlash that could threaten the United States and other countries for decades to come.
The war has cost U.S. taxpayers close to $1 trillion dollars, contributing greatly to the national debt, which has resulted in the sequester and is being used as an excuse to cut back vital social programs. Counting interest (since money to pay for the war was borrowed), care for wounded veterans, and other residual costs, the final tally could be close to $3 trillion dollars."