The Treaty of Lisbon (initially known as the Reform Treaty) is a treaty that was signed by the European Union (EU) member states on 13 December 2007, and entered into force on 1 December 2009. It amends the Treaty on European Union (TEU, Maastricht; 1992) and the Treaty establishing the European Community (TEC, Rome; 1957). In this process, the TEC was renamed to Treaty on the Functioning of the European Union (TFEU).
Of which Article 288 states:
A regulation shall have general application. It shall be binding in its entirety and directly applicable in all Member States.
A directive shall be binding, as to the result to be achieved, upon each Member State to which it is addressed, but shall leave to the national authorities the choice of form and methods.
A decision shall be binding in its entirety. A decision which specifies those to whom it is addressed shall be binding only on them.
Recommendations and opinions shall have no binding force.