Treaty of Lisbon was signed on 13 December 2007, but will only enter into force once it has been ratified by all Member States.
Síníodh Conradh Liospóin ar 13 Nollaig 2007, ach ní thiocfaidh sé i bhfeidhm go dtí go ndaingneofar na Ballstáit go léir é.