Bayern's Mario Mandzukic of Croatia celebrates scoring during the Champions League Final soccer match between Borussia Dortmund and Bayern Munich at Wembley Stadium in London, Saturday May 25, 2013. (AP Photo/Martin Meissner)
British Prime Minister David Cameron (left) laughs as he speaks with (from right) Finland's Prime Minister Jyrki Tapani Katainen, Croatian Prime Minister Zoran Milanovic, German Chancellor Angela Merkel and Estonia's Prime Minister Andrus Ansip during a round table meeting at an EU summit in Brussels on Dec. 13, 2012. (Associated Press)
Australia's Samantha Stosur hits a forehand shot against Petra Martic of Croatia at the 2012 US Open Tennis tournament, Monday, Aug. 27, 2012, in New York. (AP Photo/Mike Groll)
Novak Djokovic, from Serbia, hits a backhand shot against Marin Cilic, from Croatia, during a quarterfinals match at the Western & Southern Open tennis tournament, Friday, Aug. 17, 2012, in Mason, Ohio. Djokovic won 6-3, 6-2. (AP Photo/Al Behrman)
United States' Sylvia Fowles (13) grabs a rebound over Croatia's Ana Lelas (11) during their women's group A basketball game at the 2012 Summer Olympics on Saturday, July 28, 2012, in London. (AP Photo/Sergio Perez, Pool)
Spain goalkeeper Iker Casillas makes a save in front of Croatia's Vedran Corluka Monday during the Euro 2012 soccer championship Group C match against Croatia in Gdansk, Poland. (Associated Press)
Croatia's Nikica Jelavic celebrates after scoring his side's second goal during the Euro 2012 soccer championship Group C match between Ireland and Croatia in Poznan, Poland, Sunday, June 10, 2012. (AP Photo/Antonio Calanni)
A pair of handcuffs are among the exhibits displayed at the Museum of Broken Relationships in Zagreb, Croatia. The exhibits have been collected from all over the world. (Associated Press)
A damaged garden gnome is displayed at the Museum of Broken Relationships in Zagreb, Croatia. Thrown over a car driven by a husband who turned “arrogant and heartless,” it bounced on the asphalt, shattering its face. (Associated Press)
Voters cast their ballots at a polling station in Zagreb, Croatia, on Sunday. Croatians voted in a nationwide referendum on whether to join the European Union, a test of how much the debt-stricken 27-nation bloc has lost its appeal among potential new members. (Associated Press)
Voters cast their ballots at a polling station in Zagreb, Croatia, on Sunday, Jan. 22, 2012, in a referendum on whether to join the European Union. (AP Photo/Darko Bandic)
Residents wave anti-EU flags as they watch a live broadcast from the U.N. court on the verdict for a key wartime Croatian commander, Gen. Ante Gotovina, in Zagreb, Croatia, in April. Croatia signed an EU accession treaty last year and is set to become a member in July 2013, if the Croats say "yes" in the referendum and all of the bloc's 27 states later ratify the deal. (Associated Press)