The EU founding treaties enshrine two clauses in the Common Security and Defence Policy (CSDP)., These clauses oblige Member States to coordinate their efforts through the Council of the EU to support a Member State suffering from armed aggression, terrorist attacks and natural or man-made disasters. Over time, they have come to be referred to as the mutual assistance clause (Art. 42(7) of the Treaty on the European Union, TEU) and the solidarity clause (Art. 222 of the Treaty on the Functioning of the European Union, TFEU).