Heads of delegations from countries taking part in EU summit in Zagreb pose for a photograph November 24, 2000. Five Balkan countries, four of them successors of communist Yugoslavia, are hoping a European Union summit in Zagreb today will help them leave behind a decade of political and economic misery. One-day European-Balkan summit, chaired by the EU, will bring together for the first time the wealthy 15-member bloc and Europe's [former trouble spots - Croatia, Bosnia, Yugoslavia, Macedonia and Albania. ]