The Kingdom of Thailand (known as Siam until 1939) was ruled by the Khmers, based in what is now neighboring Cambodia, during the 11th and 12th centuries. In 1238, two Thai chieftains rebelled against Khmer domination and established the first independent Thai kingdom. Ayutthaya, to the north of Bangkok, was the capital of the kingdom from the early 14th century, until its destruction by Burmese invaders in 1767. The Burmese were quickly forced out and the monarchy re-established. The absolute rule of the monarchy lasted until 1932, when it was replaced by a system of constitutional monarchy.
Thereafter, Thailand gradually installed a democratic, pluralistic system of government. Progress was slow, mainly because of the attitude of the military, which has traditionally exercised a strong (although rarely beneficial) influence on Thai politics. Since 1932, the army has taken over the government on no less than 17 occasions. During the Cold War, this was a minor consideration – democratic governments were a rarity in the region and Thailand’s chief strategic ally, the USA, were more concerned with Thailand’s role as a bulwark against encroaching communism from elsewhere in Southeast Asia. In this regard, Thailand was an influential member of the main regional anti-communist bloc, Association of South-East Asian Nations (ASEAN). Since the end of the Cold War, Thailand has been prominent in proposing the reformation of ASEAN into a regional trading bloc.
This was part of a realignment of Thai foreign policy engineered by the government of Chatichai Choonhaven, who led the country from his election in 1988 until his overthrow in a military coup in February 1991. This coup – the 17th and last since 1932 – was a short-lived affair headed by army chief General Suchinda Kraprayoon and ended with a return to democratic civilian government in March 1992.
