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Croatia's President Ivo Josipovic, right, receives a shirt from Lithuania's President Dalia Grybauskaite as they celebrate Croatia's entry into the European Union, on the central square in Zagreb, Croatia, Sunday, June 30, 2013. Fireworks lit the sky and festive crowds gathered on the streets to mark Croatia's entry Monday into the European Union, a major milestone some 20 years after the country won independence in a bloody civil war that shook the continent. (AP Photo/Darko Bandic) ( Croatia Entering EU )

Fireworks illuminate the sky over the border crossing between Croatia and Slovenia during celebration of Croatia's EU accession, in Bregana, early Monday, July 1, 2013. Fireworks lit the sky and festive crowds gathered on the streets to mark Croatia's entry Monday into the European Union, a major milestone some 20 years after the country won independence in a bloody civil war that shook the continent. (AP Photo/Darko Bandic) ( Croatia Entering EU )

A tourist resort in Pula, northern Adriatic is seen from the air. On Monday July 1, 2013, Croatia will become the 28th EU member, the bloc's first addition since Bulgaria and Romania joined in 2007. Croatia's membership marks a historic turning point for the small country, which went through carnage after declaring independence from the former Yugoslavia in 1991. (AP Photo/Darko Bandic) ( Croatia Entering EU )

European Union and Croatian flags are seen in downtown Zagreb on June 29, 2013. Croatia will become the 28th country to enter the European Union on July 1, 2013. DIMITAR DILKOFF/AFP/Getty Images ( 520990179 )

Soldiers of the Eurocorps hold the flag of Croatia in front of the European Parliament in Strasbourg, July 1, 2013. Two decades since fighting itself free of Yugoslavia, Croatia becomes the 28th member of the European Union on Monday against a backdrop of economic woes in the Adriatic republic and the bloc it is joining. REUTERS/Vincent Kessler ( CROATIA-EU/ )

Soldiers of the Eurocorps hoist the flag of Croatia in front of the European Parliament in Strasbourg, July 1, 2013. Two decades since fighting itself free of Yugoslavia, Croatia becomes the 28th member of the European Union on Monday against a backdrop of economic woes in the Adriatic republic and the bloc it is joining. REUTERS/Vincent Kessler ( CROATIA-EU/ )

Croatia's President Ivo Josipovic (L) and Prime Minister Zoran Milanovic (R) welcome European Parliament President Martin Schulz (C) at the celebration of the accession of Croatia to the European Union at St. Mark's Square in Zagreb June 30, 2013. Croatia becomes the 28th member of the European Union at midnight, a milestone that caps the Adriatic republic's recovery from war but is tinged with anxiety over its weak economy and the state of the bloc it joins. REUTERS/Antonio Bronic ( CROATIA-EU/ )

Croatia's Foreign Minister Vesna Pusic welcomes compatriot Stefan Fule, the European Commissioner for Enlargement at the celebration of the accession of Croatia to the European Union at St. Mark's Square in Zagreb June 30, 2013. Croatia becomes the 28th member of the European Union at midnight, a milestone that caps the Adriatic republic's recovery from war but is tinged with anxiety over its weak economy and the state of the bloc it joins. REUTERS/Antonio Bronic ( CROATIA-EU/ )

European Commission President Jose Manuel Barroso waves during the celebration of the accession of Croatia to the European Union at Ban Jelesic square in Zagreb on June 30, 2013. Tens of thousands of Croatians cheered the country's entry into the European Union at midnight Sunday (2200 GMT), almost two decades after the former Yugoslav republic's bloody independence war ended. DIMITAR DILKOFF/AFP/Getty Images ( 521030867 )

Dignitaries take part in celebrations marking Croatia's entry into the European Union, on the central square in Zagreb, Croatia, Sunday, June 30, 2013. Croatia has become the 28th member of the European Union, a major milestone some 20 years after the small country won independence in a bloody civil war that shook the continent. (AP Photo/Darko Bandic) ( Croatia Entering EU )

Fireworks burst over the cityscape during the International Fireworks Festival in Zagreb June 29, 2013. Croatia becomes the 28th member of the European Union at midnight on Sunday, a milestone that caps the Adriatic republic's recovery from war but is tinged with anxiety over the state of the economy and the bloc it joins. REUTERS/Antonio Bronic ( CROATIA-EU/ )

A street scene is reflected in the window of a library with an EU flag on display in downtown Zagreb, Croatia, Sunday, June 30, 2013. Croatia is to join the European Union on July 1, 2013. (AP Photo/Darko Bandic) ( Croatia Entering EU )

Window mannequins with EU and Croatian flags are on display in a shop window in downtown in Zagreb, Croatia, Sunday, June 30, 2013. Croatia is to join the European Union on July 1, 2013. Fireworks are ready and foreign leaders are arriving as Croatia celebrated on Sunday its entry into the European Union some 20 years after winning independence in a bloody civil war that shook the continent. Croatia will become the 28th EU member on Monday, the bloc's first addition since Bulgaria and Romania joined in 2007. (AP Photo/Darko Bandic) ( Croatia Entering EU )

Croatian and the EU flags are seen at an intersection in Zagreb, Croatia, Saturday, June 29, 2013. Croatia is to join the European Union on July 1, 2013. (AP Photo/Darko Bandic) ( Croatia EU )

Workers clean the podium prepared for the celebration of the accession of Croatia to the European Union at St. Mark's Square in Zagreb June 30, 2013. Croatia becomes the 28th member of the European Union at midnight, a milestone that caps the Adriatic republic's recovery from war but is tinged with anxiety over its weak economy and the state of the bloc it joins. REUTERS/Antonio Bronic ( CROATIA-EU/ )

Eight Balkan nations leaders attend an informal meeting in Zagreb on July 1, 2013. Croatia woke up on July 1 as the newest EU state after a night of celebrations dampened by fears that membership to the crisis-hit bloc would only add to the country's deep-rooted economic burden. DIMITAR DILKOFF/AFP/Getty Images ( 521048747 )

A Croatian teenager holds an EU flag during the opening ceremony of the European Union office in Zagreb on July 1, 2013. Croatia woke up on Monday as the newest EU state after a night of celebrations dampened by fears that membership to the crisis-hit bloc would only add to the country's deep-rooted economic burden. STRINGER/AFP/Getty Images ( 521048717 )

The Croatian flag flutters after being raised during a ceremony for Croatia's accession to the European Union on July 1, 201 at the European Parliament in Strasbourg, eastern France. Croatia woke up on Monday as the newest EU state after a night of celebrations dampened by fears that membership to the bloc could add to the recession-hit country's economic burden. FREDERICK FLORIN/AFP/Getty Images ( 521055570 )

A welcome text is seen on a board, written in several languages, during a ceremony for Croatia's accession to the European Union on July 1, 2013, in the European Parliament in Strasbourg eastern France. FREDERICK FLORIN/AFP/Getty Images ( 521056014 )

A closed Croatian border crossing is seen at Bregana on July 1, 2013. Croatia became the European Union's 28th member on Monday and its roughly 1,400 km of land border with non-EU neighbors Bosnia, Serbia and Montenegro will now become the bloc's new external frontier. Croatian and Slovenian border police now work together. REUTERS/Antonio Bronic ( CROATIA-BORDERS/ )

Croatian demonstrators display a poster reading "We like Croatia, No in EU" during a protest against the entry of Croatia in the European Union in downtown Zagreb on June 29, 2013. Croatia will become on July 1, 2013 the 28th country to enter the European Union. DIMITAR DILKOFF/AFP/Getty Images ( 520990833 )