European Council President Donald Tusk (3rdL), European Commission President Jean-Claude Juncker (2ndR) and European Parliament President Martin Schulz (L) pose for a group photo with Slovakia's Prime Minister Robert Fico (C), Slovakia's President Andrej Kiska (3rdR) and Speaker of the Slovakia's National Council Andrej Danko (2ndL) at the Government office ahead of an upcoming European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 15, 2016. REUTERS/Yves Herman