President of the European Council extended his influence into financial policy, the most important area left to the rotating Council presidency, with the rotating presidency seeing a greater decrease in power than previously planned. Many of the changes introduced with the Lisbon Treaty need concretion through practical implementation by the current actors. The Spanish presidency unsuccessfully tried to challenge the European Council president's prominent post during the first rotating presidency of 2010, while the second half of the year saw a Belgian rotating presidency marked by a weakened caretaker government which did not challenge Herman van Rompuy, himself a Belgian politician. The Belgian rotating presidency
President of the European Union of the European Union, "President" of the European Council and "Prime Commissioner" would give a clearer indication of their respective roles. During the height of the Commission President's powers in the late-1980s and 1990s, the Commission President was sometimes referred to as the Europe's Prime Minister and the role of the President is similar to that of a national Prime Minister chairing a cabinet. The formulation of titles is not without precedent in Europe; for comparison, the title for the Prime Minister of Spain in Spanish is the "Presidente del Gobierno" ("President of the Government"), not Prime Minister. The Presidents