The European Union's chief negotiator Michel Barnier (R) and British Secretary of State for Exiting the European Union (Brexit Minister) David Davis arrive for a joint statement before the opening of Brexit negotiations at the EU headquarters in Brussels on June 19, 2017.  
The European Union's chief negotiator Michel Barnier on June 19, 2017 said he hoped for a "constructive" start to Brexit talks with Britain as formal negotiations began in Brussels."I hope that today we can identify priorities and a timetable that would allow me to report to the (EU summit) later this week that we had a constructive opening of the negotiations," the Frenchman said as he greeted Britain's Brexit minister David Davis.
 / AFP PHOTO / JOHN THYS        (Photo credit should read JOHN THYS/AFP/Getty Images)