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

Eritrean refugee Johne Teweldebirhan, 18, takes a kick from the sidelines during a recent indoor practice with Soccer Without Borders in Baltimore, Maryland, U.S., July 28, 2016. Teweldebirhan came to the U.S. from Port Sudan, Sudan last year. Picture taken July 28, 2016. REUTERS/Nathan Frandino