Steve Walt asks an interesting question: Is America addicted to war? He gives five reasons why we find ourselves in constant war: 1. Because we can2. Because we have no serious enemies3. The all volunteer force4. It's the establishment stupid5. Congress has checked outThe first three and the last point all speak to the limited international and domestic structural constraints the United States faces on the use of force. The fourth speaks to the agency involved. On this point he argues:the foreign-policy establishment is hard-wired in favor of "doing something." Foreign-policy thinking in...