The politics of Croatia are defined by a parliamentary, representative democratic republic framework, where the Prime Minister of Croatia is the head of government in a multi-party system. Executive power is exercised by the Government and the President of Croatia. Legislative power is vested in the Croatian Parliament (Croatian: Sabor). The Judiciary is independent of the executive and the legislature. The parliament adopted the current Constitution of Croatia on 22 December 1990 and decided to declare independence from Yugoslavia on 25 May 1991. The Constitutional Decision on the Sovereignty and Independence of the Republic of Croatiacame into effect on 8 October 1991. The constitution has since been amended several times. The first modern parties in the country developed in the middle o