Kosovo is a multi-party parliamentary representative democratic republic. It is governed by legislative, executive and judicial institutions, which derive from the constitution, although, until the Brussels Agreement, North Kosovo was in practice largely controlled by institutions of Serbia or parallel institutions funded by Serbia. Legislative functions are vested in both the Parliament and the ministers within their competencies. The Government exercises the executive power and is composed of the Prime Minister as the head of government, the Deputy Prime Ministers and the Ministers of the various ministries.