Think about it this way: Are we actually safer if we get rid of police, firefighters, and teachers here in the U.S., while essentially hiring hordes of police and military personnel to secure Afghanistan? I suspect you know how most Americans would answer that question.
http://www.huffingtonpost.com/tom-engelhardt/cutting-100-billion-easy-_b_824729.html
http://www.huffingtonpost.com/tom-engelhardt/cutting-100-billion-easy-_b_824729.html