Treaty of Accession 2011
The Treaty of Accession 2011 is an agreement between the member states of the European Union and Croatia concerning Croatia's accession to the EU. It was signed on 9 December 2011 in Brussels by the heads of state or government of the 27 member states and by the president of Croatia, Ivo Josipović, and Prime Minister Jadranka Kosor. The Treaty entered into force on 1 July 2013, making Croatia the 28th country to join the European Union.