President of the European Council

The president of the European Council is the person presiding over and driving forward the work of the European Council on the world stage. This institution comprises the college of heads of state or government of European Union (EU) member states as well as the president of the European Commission, and provides political direction to the EU. From 1975 to 2009, the chair of the European Council was an unofficial position (often referred to as the president-in-office) held by the head of state or government of the member state holding the semiannually rotating presidency of the Council of the European Union at any given time.

Source: Wikipedia — President of the European Council (CC BY-SA 4.0)