“The source of the government’s authority is ‘the consent of the governed.’ This means that the government is not the ruler, but the servant or agent of the citizens; it means that the government as such has no rights except the rights delegated to it by the citizens for a specific purpose.” | The Virtue of Selfishness by Ayn Rand

There’s no need to cite Ayn Rand. Article 4(1) of Vanuatu’s constitution says it clearly: “National sovereignty belongs to the people of Vanuatu which they exercise through their elected representatives”.