For the rootless cosmopolitans it is paradise: Singapore. One of those rare places where it doesn't count which nationality you have and where everything is well organized.
But Lee Kuan Yew, who was its leader from 1965 to 1990, is not so optimistic. He explains that it is due to that diversity that he didn't introduce democracy in Singapore - as its main effect would be ethnic parties.
Singapore is 75% Chinese, but the Chinese are divided in dialects.