European Security and Defence Policy / Gibraltar / European Foreign and Security Policy / Common Security and Defense Policy / EU Member states / EU Common Foreign and Security Policy / EU Common Foreign and Security Policy (CFSP Common Security and Defence Policy (CSDP) and International Relations Theory / Brexit / Brexit 2016 / withdrawal of treaties / EU Common Foreign and Security Policy / EU Common Foreign and Security Policy (CFSP Common Security and Defence Policy (CSDP) and International Relations Theory / Brexit / Brexit 2016 / withdrawal of treaties