I think the Egyptians would beg to differ - also that whole roman-empire thing. Hell, the Chinese built a wall to keep the mongols out becuase they feared them so much.
actually i was talking abt ancient history, but as i recall we were on the verge of kicking kim il sung's ass for good until the Chinese army intervened and drove us back to the 38th parallel.
ignore krazykarl he is a neocon he could literally watch his house burn and convince himself that its not burning people like that are seriously lacking