Peace treaties and interventions only apply to certain countries. Not all countries in the world agree with us. Lots of treaties we here about are within the United Nations, and not all nations are in that. Many rebelling countries could attack the U.S. and other countries, and without funding for defenses they will probably fall. Weapons alone can't stop an army, and not all treaties and intervention's will have an effect on this. We need to also fund weapon's, because those are part of a military. Whether you disagree or not, countries funding militaries isn't bad and is essential. Most of the money is to tend to soldiers and make technological advances.