China provides a useful case-study for the changing face of security. The governments of Imperial China, Nationalist China and Communist China all had very different views of and approaches to security. As the country has moved towards a form of capitalism in recent times its approach has changed once more; whereas before there were six principal challenges in this area there are today six entirely different principal challenges. While today the Chinese military is extremely strong, no doubt primarily to dissuade foreign aggression, Chinese participation in international peace-keeping is also now an important factor.