Since Vietnam is a single-party state, the president is generally considered to hold the second highest position in the political system, formally after the General Secretary of the Communist Party of Vietnam. In addition, the president appoints the head of government, the Prime Minister. As head of state, the President represents Vietnam both domestically and internationally, and maintains the regular and coordinated operation and stability of the national government and safeguards the …
https://en.wikipedia.org/wiki/President_of_Vietnam