Thailand is a country in Southeast Asia situated between Malaysia, Myanmar, Laos, and Cambodia. Its largest city and capital is Bangkok. Its official language is Thai. Its government is a parliamentary democracy and constitutional monarchy. Their current king is Bhumibol Adulyadej, who has reigned since 1946. He is the world's longest current serving head-of-state. Thailand's prime minister is Abhisit Vejjajiva, who came into office in December 2008. Their currency is the Baht. The main religion is Buddhism, with 95% of the population practicing it.