Institutional seats of the European Union was against the treaties and the natural prerogatives of a Parliament elected by direct universal suffrage, claiming the right to decide its own workings to its own efficiency. In response, leaders annexed the decision to the Treaty of Amsterdam, including it in the treaties. A Council decision on 29 October 1993 on the location of European agencies established that the European Monetary Institute, later the European Central Bank, would be based in Frankfurt. Frankfurt had to compete with numerous other cities, including London, Paris, Amsterdam, Luxembourg, Lyon, Barcelona and even Basel (in Switzerland, which was outside the European Union). France
Accession of Montenegro to the European Union Deutsche Mark yielded, Montenegro followed suit and began using the euro as well, with no objection from the European Central Bank (ECB). The European Commission and the ECB have since voiced their discontent over Montenegro's unilateral use of the euro on several occasions.” A statement attached to their Stabilisation and Association Agreement with the EU read: "unilateral introduction of the euro was not compatible with the Treaty." The EU insists on the strict adherence to convergence criteria (such as spending at least 2 years in the ERMII system) which are not negotiable before euro adoption, but have not intervened to