On March 29, 2017, the U.K. Government triggered Article 50 of the Treaty on European Union (TEU) on withdrawal from the European Union following a referendum on June 23, 2016 in which 51.89 percent voted for the United Kingdom to leave the European Union. As a hybrid provision, the much-discussed withdrawal provision in Article 50 TEU is part of EU law yet also anchored in public international law. Although the European Union is a unique, supranational organization that creates rights for individuals that are directly effective in national law, its member states created the European Union based on traditional treaties under international law.