Will any member of the European Union decide to leave the EU in 2025?
Market Rules
For this market to be resolved as "Yes", it is only necessary that a member state of the EU officially notifies the European Council between January 1st and December 31st, 2025, of its intention to leave the EU, following Article 50(2) from the Lisbon Treaty, regardless of how long the actual process of leaving may take.
Only official notifications to the European Council will be considered valid. Non-binding referendums or political statements will not be sufficient for a 'Yes' resolution.