Brussels , 29/04/2017 Special European Council (Art. 50) at the european council. The special European Council (Article 50), in an EU 27 format, will adopt the guidelines for the Brexit negotiations. The guidelines will define the framework for negotiations and set out the overall EU positions and principles during negotiations. Pix: Donald Tusk / Francois Hollande Credit : Frederic Sierakowski / Isopix