Withdrawal From The European Union - Procedure

Procedure

The Treaty of Lisbon introduced an exit clause for members who wish to withdraw from the Union. Under TEU Article 50, a Member State would notify the European Council of its intention to secede from the Union and a withdrawal agreement would be negotiated between the Union and that State. The Treaties would cease to be applicable to that State from the date of the agreement or, failing that, within two years of the notification unless the State and the Council both agree to extend this period. The agreement is concluded on behalf of the Union by the Council and shall set out the arrangements for withdrawal, including a framework for the State's future relationship with the Union. The agreement is to be approved by the Council, acting by qualified majority, after obtaining the consent of the European Parliament. A former Member State seeking to rejoin the European Union would be subject to the same conditions as any other applicant country.

This system gives a negotiated withdrawal, due to the complexities of leaving the EU (particularly concerning the euro). However it does include in it a strong implication of a unilateral right to withdraw. This is through the fact the state would decide "in accordance with its own constitutional requirements" and that the end of the treaties' application in said state is not dependent on any agreement being reached (it would occur after two years regardless).