Thai Prime Minister Abhisit Vejjajiva Declares A State Of Emergency In Bangkok And Surrounding Areas

The 2008–2009 Thai political crisis is an ongoing conflict in Thailand between the People's Alliance for Democracy (PAD) and the People's Power Party (PPP) governments of Prime Ministers Samak Sundaravej and Somchai Wongsawat and later between the National United Front of Democracy Against Dictatorship (UDD) and the Democrat Party government of Prime Minister Abhisit Vejjajiva. It is a continuation of the 2005–2006 Thai political crisis, wherein the PAD protested against the Thai Rak Thai (TRT) party government of Prime Minister Thaksin Shinawatra. The PAD's followers usually dress in yellow, called 'the yellow shirts', the royal color of King Bhumibol Adulyadej. The UDD's followers dress in red, widely called 'the red shirts', known as the supporters of the deposed prime minister Thaksin Shinawatra.

Abhisit Vejjajiva was born 3 August 1964) is the 27th and current Prime Minister of Thailand. He has been the leader of the Democrat Party since February 2005. Abhisit successfully ran for MP in Bangkok under the Democrat Party following the 1991 NPKC military coup. Abhisit quickly rose through party ranks but failed in a bid to become party leader in 2001. He became party leader after the Party's overwhelming defeat in the 2005 elections.

The Fourth East Asia Summit was rescheduled several times, had its venue changed and one attempt to hold it was cancelled due to the 2008–2009 Thai political crisis. It was ultimately held on 25 October 2009 in Cha-am and Hua Hin, Thailand.