The Treaty between the Kingdom of Belgium, the Republic of Bulgaria, the Czech Republic, the Kingdom of Denmark, the Federal Republic of Germany, the Republic of Estonia, Ireland, the Hellenic Republic, the Kingdom of Spain, the French Republic, the Italian Republic, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Grand Duchy of Luxembourg, the Republic of Hungary , the Republic of Malta, the Kingdom of the Netherlands, the Republic of Austria, the Republic of Poland, the Portuguese Republic, Romania, the Republic of Slovenia, the Slovak Republic, the Republic of Finland, the Kingdom of Sweden, the United Kingdom of Great Britain and Northern Ireland and the Republic of Croatia concerning the accession of the Republic of Croatia to the European Union, with attachments , Protocol, Final Act, declarations and the exchange of letters, done at Brussels on December 9, 2011 joined into force internationally on 1 July 2013, pursuant to art. 3, paragraph 3, having deposited the last signatory State, the Federal Republic of Germany, on June 30, 2013, its instrument of ratification.
The Italian Republic had already deposited, on April 10, 2012, its instrument of ratification following the enactment of the law authorizing the ratification of February 29, 2012 # 17, published in the Official Journal No. 17 of February 29, 2012.