The politics of Vietnam is dominated by a single party, the Communist Party of Vietnam (CPV). The President of Vietnam is the head of state, and the Prime Minister of Vietnam is the head of government, both of these are separate from the General Secretary of the Communist Party of Vietnam who leads the Communist Party and is head of the Politburo and the Central Military Commission, thus the General Secretary is the de facto supreme leader of Vietnam. Executive power is exercised by the government and the President of Vietnam. Legislative power is vested in the National Assembly of Vietnam (). The Judiciary is independent of the executive. The parliament adopted the current Constitution of Vietnam, its fifth, on 28 November 2013. The Vietnamese political system is authoritarian, with the freedom of assembly, association, expression, press and religion as well as civil society activism being tightly restricted. There are no freely elected national leaders, political opposition is suppressed, all religious activity is controlled by the CPV, and dissent is not permitted and civil rights are curtailed. Elections in Vietnam occur under a single-party authoritarian political system. Vietnam is among the few contemporary party-led dictatorships to not hold any direct elections at the national level. The competitive nature of the elections is highly constrained by the Communist Party's monopoly on power in Vietnam, limitations on free speech, and government interference with the elections. The National Assembly is a unicameral legislative body. The National Assembly has 500 members, elected by popular vote to serve four-year terms. The legislature is, according to the constitution, the highest organ of the state. Its powers includes the enactment and amendment of the constitution and laws; the adoption of the government budget; supervising the Government of Vietnam and other holders of public powers responsible to the National Assembly; and appointing members of the judiciary. The Vietnamese constitution and legislation provide for regular elections for the office of the President of the Socialist Republic, the National Assembly and the People's Councils. The President () is elected by National Assembly for a five-year term and acts as the de jure commander-in-chief of the Vietnam People's Armed Forces and Chairman of the Council for Defence and Security. However, the president has the right to decide on executive brands. The government (), the main executive state power of Vietnam, is headed by the Prime Minister, who has several Deputy Prime