Wikipedia, ok, does that mean I can quote my drunk uncle too?
Your first source is misrepresenting the "Federal Discretionary Spending" as the entire federal budget. The budget includes discretionary spending as well as mandated spending. When you analyse the facts correctly 19% is on military and domestic security, 18% discretionary non-military, 9% debt interest, Medicaid 7%, Medicaire 14%, Social Security 21% and other mandated spending totals another 12%.
Don't listen to what someone else thinks it means mate, read it yourself and engage your grey matter. Don't believe me even, here it is...
http://www.whitehouse.gov/omb/budget/fy2007/
We must prepare for all enemies, foreign and domestic, known and unknown. Failure to pursue these ends is criminal. Iraq, Iran, China, Russia, Cuba, Venezuela, Quebec... you must plan and prepare for all possible threats, then and only then can your society rest easy and unfortunately it is a race without end.