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 Federal Executive Council of Yugoslavia President of the Federal Executive Council of Yugoslavia The President of the Federal Executive Council was the head of government of the Socialist Federal Republic of Yugoslavia, from the adoption of the 1963 constitution until the complete breakup of the country in 1992. The 1953 Yugoslav constitutional law proclaimed the country to be a socialist state and abolished the institutions of Prime Minister and Government that had existed since the country's establishment in 1918. A new office of President of the Republic was created for Yugoslav communist leader Josip Broz Tito which would be both the country's head of state