Nikos Skoutaris via Macropolis | June 19 was day one of the Brexit negotiations. David Davis and Michel Barnier will be leading what is expected to be one of the most tantalising sets of negotiations in the history of European integration. Difficult decisions will have to be taken on a number of issues, such as the rights of EU citizens in the UK and UK citizens in the EU, the Irish border and the future of the UK-EU trade relationship.