section_path: Politics/Defence
section_name: Defence
paragraph_text: Defence
  
  The predecessors of the European Union were not devised as a military alliance because NATO was largely seen as appropriate and sufficient for defence purposes. 23 EU members are members of NATO while the remaining member states follow policies of neutrality. The Western European Union, a military alliance with a mutual defence clause, closed in 2011 as its role had been transferred to the EU. Following the Kosovo War in 1999, the European Council agreed that "the Union must have the capacity for autonomous action, backed by credible military forces, the means to decide to use them, and the readiness to do so, in order to respond to international crises without prejudice to actions by NATO". To that end, a number of efforts were made to increase the EU's military capability, notably the Helsinki Headline Goal process. After much discussion, the most concrete result was the EU Battlegroups initiative, each of which is planned to be able to deploy quickly about 1500 personnel. The EU Strategic Compass adopted in 2022 reaffirmed the bloc's partnership with NATO, committed to increased military mobility and formation of a 5,000-strong EU Rapid Deployment Capacity
  
  Since the withdrawal of the United Kingdom, France is the only member officially recognised as a nuclear weapon state and the sole holder of a permanent seat on the United Nations Security Council. France and Italy are also the only EU countries that have power projection capabilities outside of Europe. Italy, Germany, the Netherlands and Belgium participate in NATO nuclear sharing. Most EU member states opposed the Nuclear Weapon Ban Treaty.
  
  EU forces have been deployed on peacekeeping missions from middle and northern Africa to the western Balkans and western Asia. EU military operations are supported by a number of bodies, including the European Defence Agency, European Union Satellite Centre and the European Union Military Staff. The European Union Military Staff is the highest military institution of the European Union, established within the framework of the European Council, and follows on from the decisions of the Helsinki European Council (10–11 December 1999), which called for the establishment of permanent political-military institutions. The European Union Military Staff is under the authority of the High Representative of the Union for Foreign Affairs and Security Policy and the Political and Security Committee. It directs all military activities in the EU context, including planning and conducting military missions and operations in the framework of the Common Security and Defence Policy and the development of military capabilities, and provides the Political and Security Committee with military advice and recommendations on military issues. In an EU consisting of 27 members, substantial security and defence co-operation is increasingly relying on collaboration among all member states.
  
  The European Border and Coast Guard Agency (Frontex) is an agency of the EU aiming to detect and stop illegal immigration, human trafficking and terrorist infiltration. The EU also operates the European Travel Information and Authorisation System, the Entry/Exit System, the Schengen Information System, the Visa Information System and the Common European Asylum System which provide common databases for police and immigration authorities. The impetus for the development of this co-operation was the advent of open borders in the Schengen Area and the associated cross-border crime.