• Article 50 is a clause in the Lisbon Treaty of the European Union that describes how a country can voluntarily leave the bloc.
  • The article says: “Any member state may decide to withdraw from the union in accordance with its constitutional requirements.”
  • The article became the subject of serious discussion during the European debt crisis of 2010-2014, when the Greek economy found itself in a quandary.
  • The UK became the first country to invoke Article 50 after a majority of voters decided to leave the bloc.