José Sócrates Carvalho Pinto de Sousa, commonly known as José Sócrates, is a Portuguese politician who was the prime minister of Portugal from 12 March 2005 to 21 June 2011. For the second half of 2007, he acted as the president-in-office of the Council of the European Union.

The Treaty of Lisbon is an international agreement that amends the two treaties which form the constitutional basis of the European Union (EU). The Treaty of Lisbon, which was signed by all EU member states on 13 December 2007, entered into force on 1 December 2009. It amends the Maastricht Treaty (1992), known in updated form as the Treaty on European Union (2007) or TEU, as well as the Treaty of Rome (1957), known in updated form as the Treaty on the Functioning of the European Union (2007) or TFEU. It also amends the attached treaty protocols as well as the Treaty establishing the European Atomic Energy Community (EURATOM).