The Berlin Declaration (officially the Declaration on the occasion of the 50th anniversary of the signature of the Treaty of Rome) is a non-binding European Union (EU) text that was signed on 25 March 2007 in Berlin (Germany), celebrating the fiftieth anniversary of the signing of the Treaty of Rome which founded the European Economic Community, the predecessor to the modern EU.
It was originally intended that the leaders of all the member states of the European Union would sign it, though getting a document agreeable to all members proved a challenge, thus it was left to the three institutional heads – though this was met with some criticism.
The declaration has been criticised by Pope Benedict XVI for not mentioning Christianity. Poland originally threatened to veto it because of this omission but stood down in order for an agreement to be reached. Several secular organizations objected to the proposed inclusion of religion and produced their own declaration called "A Vision for Europe".
In the original German (the language the document was drafted in), the phrase "We, the citizens of the European Union, have united for the better" was written as "Wir Bürgerinnen und Bürger der Europäischen Union sind zu unserem Glück vereint." which is in fact closer to "We, the citizens of the European Union, have united in our fortune/happiness". This has been seen as a deliberate political mistranslation.