This document is an excerpt from the EUR-Lex website
The Lisbon Treaty introduced the possibility for certain EU countries to strengthen their cooperation in military matters by creating permanent structured cooperation (Articles 42(6) and 46 of the Treaty on European Union (TEU)). In order to do this, interested countries must fulfil two main conditions provided in Protocol No 10 annexed to the treaty:
The European Defence Agency regularly assesses the contributions of participating countries.
EU countries wishing to constitute permanent structured cooperation must notify their intention to the Council and to the EU’s High Representative for Foreign Affairs and Security Policy. Following this notification, the Council must adopt a decision by qualified majority establishing permanent structured cooperation and the list of participating countries. The membership of new countries or the suspension of some of them is decided by the Council by a qualified majority of the members participating in the permanent structured cooperation. The decisions and recommendations taken within the framework of such permanent structured cooperation are adopted by unanimity of the participating Council members only.