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
Prime Minister of the Netherlands political leader of the largest party in cabinet, but actually of the third largest. In 1983 the function of Prime Minister was laid down in the constitution. The position of the Prime Minister has been enforced by the creation of the European Council. In November 2006, the rules of procedure of the council of ministers was changed to allow the Prime Minister to put any item on the agenda of the council, whereas before he had to wait for a minister to take the initiative. A change of the rules of procedure of the cabinet in July 2008 allowed the