The Deputy Prime Minister of the Socialist Republic of Vietnam (Vietnamese: Phó Thủ tướng Cộng hòa xã hội chủ nghĩa Việt Nam), known as Deputy Chairman of the Council of Ministers (Vietnamese: Phó Chủ tịch Hội đồng Bộ trưởng) from 1981 to 1992, is one of the highest offices within the Central Government. The deputy prime minister has throughout its history been responsible for helping the prime minister to handle Vietnam's internal policies. Since Vietnam is a one-party state, with the Communist Party of Vietnam being the sole party allowed by the constitution, all the deputy prime ministers of the Democratic Republic and the Socialist Republic have been members of the party while holding office. There are currently four deputy prime ministers; Phạm Bình Minh, Vũ Đức Đam, Le Van Thanh and