Contributor(s): Professor Lord Wallace | Article 233 of the Treaty of Rome declared that 'any European state may apply to join the European Economic Community'. In the 1950s, only West European states were free to make that choice. Since 1989, ten states from what was the former socialist bloc have joined the EU, as well as two Mediterranean island states. Nevertheless, politicians and publics in the 'old' Western Europe still see their region as the core of Europe, and worry about further enlargement of both the EU and NATO. So where does 'Europe' stop? Are there boundaries to future enlargement?

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