European Union leaders pose for a family photo during the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Leonhard Foeger

EU leaders attend the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Yves Herman

(L-R) Ireland's Prime Minister Enda Kenny, Cyprus' President Nicos Anastasiades , Denmark's Prime Minister Lars Lokke Rasmussen, Germany's Chancellor Angela Merkel, Belgian Prime Minister Charles Michel and Italy?s Prime Minister Matteo Renzi attend the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Yves Herman

Hungary's Prime Minister Victor Orban arrives to pose for a family photo during the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Leonhard Foeger

Maltese Prime Minister Joseph Muscat (L), Hungary's Prime Minister Victor Orban (2nd L), Germany's Chancellor Angela Merkel and Austria's Chancellor Christian Kern (R) arrive to pose for a family photo during the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Leonhard Foeger

European Union leaders pose for a family photo during the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Leonhard Foeger

(L-R) Slovakia's Prime Minister Robert Fico, Finland's Prime Minister Juha Sipila, Swedens's Prime Minister Stefan Lofven and Lithuania's President Dalia Grybauskaite arrive to pose for a family photo during the European Union summit- the first one since Britain voted to quit- in Bratislava, Slovakia, September 16, 2016. REUTERS/Leonhard Foeger

Joffre Mbangila (R), 17, of the Democratic Republic of Congo, tries to escape from a defender during a recent indoor practice with Soccer Without Borders in Baltimore, Maryland, U.S., July 28, 2016. Picture taken July 28, 2016. REUTERS/Nathan Frandino