| COSI |
Standing Committee on Internal Security |
| CSDP |
Common Security and Defence Policy |
| CSDP-CR |
Common Security and Defence Policy – Crisis Response |
| EDC |
European Defence Community |
| EEAS |
European External Action Service |
| EEZ |
Exclusive Economic Zone |
| ENISA |
European Union Agency for Cybersecurity |
| EU |
European Union |
| EUMS |
European Union Military Staff |
| IPCR |
Integrated Political Crisis Response |
| ISP |
Integrated Approach for Security and Peace |
| MATF |
Mutual Assistance Task Force |
| NATO |
North Atlantic Treaty Organization |
| OCT |
Overseas countries and territories |
| OMR |
Outermost regions |
| PESCO |
Permanent Structured Cooperation |
| PSC |
Political and Security Committee |
| TEU |
Treaty on European Union |
| TFEU |
Treaty on the Functioning of the European Union |
| UN |
United Nations |
| WEU |
Western European Union |