“When the U.K. notifies, it is our goal to react with the draft negotiation guidelines for the 27 Member States to consider. For this I think we need more or less 48 hours,” – said  EU Council president Donald Tusk ahead of the  procedure launch. “Negotiating the political and technical hurdles of Brexit will be our daily challenge” – he added.

Brexit must be a one-off event and must not lead to the disintegration of the European Union, Donald Tusk said, calling for unity of EU27.