Thanks to the Collectif Français Non à l‘Otan for preparing this overview.
EU : European Union (28 countries)
NATO : North Atlantic Treaty Organisation (30 countries)
PESCO : Permanent Structured Cooperation (EU) (25 countries)
EAD : European Defence Agency (EU) (27 countries)
EI2 : European Intervention Initiative (14 countries)
OSCE : Organization for Security and Co-operation in Europe (57 countries)
Download the overview: State memberships EU NATO.pdf