U.S. Under Secretary of State William Burns (L) speaks with Thailand's Prime Minister Abhisit Vejjajiva at the Government House in Bangkok July 16, 2010. Burns is on a one-day official visit to Thailand before travelling to Cambodia.U.S. Under Secretary of State William Burns (L) speaks with Thailand's Prime Minister Abhisit Vejjajiva at the Government House in Bangkok July 16, 2010. Burns is on a one-day official visit to Thailand before travelling to Cambodia. (PRD)

Senior US envoy William Burns (L) speaks to the press next to Thai Foreign Minister Kasit Piromya (R) during a press conference at the Foreign Ministry in Bangkok on July 16, 2010. Burns is on visit Thailand for talks with the politically torn ally on a trip that will also take him to Cambodia, Indonesia and the Philippines. (Getty Images)