His argument in this video is all emotional. The reason conservatives take a different approach to foreign policy than they do domestic economic policy is because you are dealing with a whole different arena!!! With foreign policy, you are talking about non Americans who at best are allys who do not share our patriotic nationalistic culture, and at worst are savages who want to kill us. With economic domestic policy you are dealing with a society of generallly good and decent people who are cooperating and sharing resources with one another.