List of countries in the 2000s
The European Union was a sui generis supranational organisation which had 15 (later 28) member states. The member states had transferred a measure of their legislative, executive, and judicial powers to the institutions of the EU, and as such the EU had some elements of sovereignty, without generally being considered a sovereign state. The European Union did not claim to be a sovereign state and had only limited capacity for relations with other states.