But the process can begin only when the government invokes a treaty provision — Article 50 — that sets out the basics of a withdrawal. What is Article 50? Article 50 is the part of the European Union treaty that lays down the procedure for a member to leave the 28-nation bloc. Has anyone ever used Article 50? Under Article 50, negotiations on withdrawal must be completed within two years.

Source: New York Times November 03, 2016 14:52 UTC