Euratom in the context of "Brexit withdrawal agreement"

The European Union and Euratom have agencies, decentralised independent bodies, corporate bodies and joint undertakings which are established as juridical persons through secondary EU legislation and tasked with a specific narrow field of work. They are a part of the wider set of bodies of the European Union and Euratom and are therefore distinct from:

• international law juridical persons established through primary (treaty) legislation, either as an EU institution (the European Central Bank) or as an EU body of another type (such as the European Investment Bank Group entities, the European University Institute, the European Stability Mechanism or the Unified Patent Court)
• other EU institutions
• other EU bodies lacking juridical personality, including the advisory bodies, the independent offices held by a single person (European Ombudsman, European Data Protection Supervisor), and the (non-independent, auxiliary) EU inter-institutional services, regardless of whether established through treaty or through secondary legislation
• the pan-EU organisational forms which are not considered constituent bodies of the EU or Euratom, regardless of whether possessing juridical personality (European Research Infrastructure Consortium, European political party, European political foundation, European grouping of territorial cooperation, Societas Europaea, Societas Cooperativa Europaea) or lacking it (European economic interest grouping)

The Inner Six (also known as the Six or the Six founders) are the six founding member states of the European Union, namely Belgium, France, West Germany, Italy, Luxembourg, and the Netherlands. They were the original members of the European Communities, which were later succeeded by the European Union. Named for their location on a map of western Europe, the Inner Six contrasted with the "Outer Seven", which pursued a free-trade system.

The Messina Conference of 1955 was a meeting of the six member states of the European Coal and Steel Community (ECSC). The conference assessed the progress of the ECSC and, deciding that it was working well, proposed further European integration. This initiative led to the creation in 1957 of the European Economic Community and Euratom.

The conference was held from 1 to 3 June 1955 at the Italian city of Messina, Sicily, in the City Hall building known as Palazzo Zanca (it). It was a meeting of the foreign ministers of all six member states of the ECSC, and it would lead to the creation of the European Economic Community. The delegations of the six participating countries were headed by Johan Willem Beyen (Netherlands), Gaetano Martino (Italy), Joseph Bech (Luxembourg), Antoine Pinay (France), Walter Hallstein (Germany), and Paul-Henri Spaak (Belgium). Joseph Bech was chairman of the meeting.