Institutional seats of the European Union are based in Luxembourg City along with the European Investment Bank. The Economic and Social Committee and the Committee of the Regions are entirely based in Brussels while the European Central Bank is based in Frankfurt and Europol is the only agency to have its seat fixed by the treaties, in The Hague. Separately, the Treaty of Nice establishes Brussels as the venue for all formal summits of the European Council after 2004. However some extraordinary sessions are sometimes held outside the city. The European Council's seat is however fixed by a declaration rather than a protocol, meaning it is
President of the European Central Bank and just prior to the recession triggered by the Lehman Brothers collapse; also by its early timidity in buying eurozone state bonds. In his final appearance (his 35th) before the European Parliament, Trichet called for more political unity, including; significant new powers to be granted to the ECB, the establishment of an executive branch with a European Finance Ministry and greater oversight powers for the European Parliament. He also asserted that the ECB's role in maintaining price stability throughout the financial crisis and the oil price rises should not be overlooked. He stated, in response to a question from a