European Union and West Germany signed the Treaty of Rome, which created the European Economic Community (EEC) and established a customs union. They also signed another pact creating the European Atomic Energy Community (Euratom) for co-operation in developing nuclear energy. Both treaties came into force in 1958. The EEC and Euratom were created separately from the ECSC, although they shared the same courts and the Common Assembly. The EEC was headed by Walter Hallstein (Hallstein Commission) and Euratom was headed by Louis Armand (Armand Commission) and then Étienne Hirsch. Euratom was to integrate sectors in nuclear energy while the EEC would develop
European Court of Justice been led by president Koen Lenaerts since 2015. The court was established in 1952, by the Treaty of Paris (1951) as part of the European Coal and Steel Community. It was established with seven judges, allowing both representation of each of the six member States and being an odd number of judges in case of a tie. One judge was appointed from each member state and the seventh seat rotated between the "large Member States" (West Germany, France and Italy). It became an institution of two additional Communities in 1957 when the European Economic Community (EEC), and the European Atomic