TRIESTE, ITALY - JULY 12 : Prime Minister of Slovenia Miro Cerar walks past the honour guard as he arrives at the Western Balkans summit in Piazza Unita d'Italia in Trieste, Italy on July 12, 2017. Seven EU and six Western Balkan nations are holding an annual summit in Trieste, with leaders. (Photo by Ales Beno/Anadolu Agency/Getty Images)
TRIESTE, ITALY - JULY 12 : Italy's Prime Minister Paolo Gentiloni (L) and Austrian Chancellor Christian Kern (R) walk past the honour guard as they arrive at the Western Balkans summit in Piazza Unita d'Italia in Trieste, Italy on July 12, 2017. Seven EU and six Western Balkan nations are holding an annual summit in Trieste, with leaders. (Photo by Ales Beno/Anadolu Agency/Getty Images)
German Chancellor Angela Merkel (R) French President Emmanuel Macron (L) and Italy's Prime Minister Paolo Gentiloni (C) share a light moment wait for the arrival of other ministers for a family photograph as part of the Western Balkans summit in Piazza Unita d'Italia in Trieste, Northern Italy on July 12, 2017. Seven EU and six Western Balkan nations are holding an annual summit in Trieste, with leaders hoping to bolster security in one of the continent's more vulnerable flanks and forge closer ties. / AFP PHOTO / Tiziana FABI (Photo credit should read TIZIANA FABI/AFP/Getty Images)
TRIESTE, ITALY - JULY 12 : German Chancellor Angela Merkel (rear R), High Representative of the European Union for Foreign Affairs and Security Policy Federica Mogherini (front R), French President Emmanuel Macron (L), Italy's Prime Minister Paolo Gentiloni (2nd L) take their place for posing for a family photo with countries' officials as part of the Western Balkans summit in Piazza Unita d'Italia in Trieste, Northern Italy on July 12, 2017. Seven EU and six Western Balkan nations are holding an annual summit in Trieste, with leaders hoping to bolster security in one of the continent's more vulnerable flanks and forge closer ties. (Photo by Baris Seckin/Anadolu Agency/Getty Images)
TRIESTE, ITALY - JULY 12 : British Foreign Secretary Boris Johnson (R) arrives at the Western Balkans summit in Piazza Unita d'Italia in Trieste, Italy on July 12, 2017. Seven EU and six Western Balkan nations are holding an annual summit in Trieste, with leaders. (Photo by Ales Beno/Anadolu Agency/Getty Images)
