The President (Chủ tịch nước) is elected by National Assembly for a five-year term and acts as the commander-in-chief of the Vietnam People's Armed Forces and Chairman of the Council for Defence and Security. Moreover, the president has the right to decide on executive brands. The government (Chính phủ), the main executive state power of Vietnam, is headed by the Prime Minister, who has several Deputy Prime Ministers and several ministers in charge of particular activities. The executive branch is responsible for the implementation of political, economic, cultural, social, national defence, security and external activities of the state. 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.