Thai anti-government "red shirt" protesters fight with police during U.N. Secretary-General Ban Ki-moon's visit at the U.N. office in Bangkok October 26, 2010. Ban is visiting Thailand, Cambodia, Vietnam and China on an Asian tour, which will include his attendance in the Association of Southeast Asian Nations (ASEAN) summit in Hanoi and the closing of the World Expo in Shanghai. (Reuters)

Members of security look on as the car carrying UN chief Ban Ki-moon arrives at the United Nations building in Bangkok on October 26, 2010. Ban Ki-moon is visiting Thailand, Cambodia, Vietnam and China on an Asian tour, which will include his attendance in the Association of Southeast Asian Nations (ASEAN) summit in Hanoi and the closing of the World Expo in Shanghai. (Getty Images)