Thai kingdoms and the late Kingdom of Siam were under absolute rule of the kings. However, after the 'democratic revolution' in 1932, led by westernized bureaucrats and traditional-oriented military, the country officially became under aconstitutional monarchy with a prime minister as the head of government. The first written constitution was issued. Yet the politics became the arena of fighting factions among old and new elites, bureaucrats, and generals. Coups happened from time to time, often bringing the country under the rule of yet another junta. To date Thailand has had seventeen charters and constitutions, reflecting a high degree of political instability. After successful coups, military regimes have abrogated existing constitutions and promulgated interim charters. Negotiation among politicians, men of influence and generals has become the prime factor for restoration of temporary political stability.