http://nbcpolitics.nbcnews.com/_news/2013/01/26/16698169-kerry-clinton-paul-remind-americans-why-911-remains-dominant-political-theme?lite
".........And 9/11’s effect is also still directly felt in the current wrestling over fiscal policy. As Obama and congressional leaders try to figure out how to pay for ever-growing entitlement programs and reduce budget deficits, Republicans in Congress, but many Democrats, too, are reluctant to significantly reduce a $630 billion Defense Department budget that grew massively in the years after Sept. 11, 2001."
My views on ths matter are largely shaped by the writings of Ret. Army Col. Andrew Bacevich.
http://en.wikipedia.org/wiki/Andrew_Bacevich
"Andrew J. Bacevich, Jr. (born 1947) is a professor of international relations at Boston University and a retired career officer in the United States Army.........Bacevich graduated from the United States Military Academy at West Point in 1969 and served in the United States Army during the Vietnam War, serving in Vietnam from the summer of 1970 to the summer of 1971. Later he held posts in Germany, including the 11th Armored Cavalry Regiment; the United States; and the Persian Gulf up to his retirement from the service with the rank of Colonel in the early 1990s. He holds a Ph.D. in American Diplomatic History from Princeton University, and taught at West Point and Johns Hopkins University prior to joining the faculty at Boston University in 1998.
On May 13, 2007, Bacevich's son, 1LT Andrew John Bacevich, was killed in action in Iraq by an improvised explosive device south of Samarra in Salah ad Din Governate.[3] The younger Bacevich, 27, was a First Lieutenant in the U.S. Army,[4] assigned to the 3rd Battalion, 8th U.S. Cavalry Regiment, 1st Cavalry Division...........
....Bacevich is critical of American foreign policy in the post Cold War era, maintaining the United States has developed an over-reliance on military power, in contrast to diplomacy, to achieve its foreign policy aims. He also asserts that policymakers in particular, and the American people in general, overestimate the usefulness of military force in foreign affairs. Bacevich believes romanticized images of war in popular culture (especially movies) interact with the lack of actual military service among most of the U.S. population to produce in the American people a highly unrealistic, even dangerous notion of what combat and military service are really like."