E3 (France, Germany, United Kingdom)

E3 refers to the "European 3," a collaboration involving France, Germany, and the United Kingdom, primarily within the aerospace and defense sectors. It focuses on joint projects, technology development, and strategic partnerships to enhance military capabilities, aerospace innovation, and economic strength among these major European nations. This cooperation helps optimize resources, share expertise, and coordinate efforts to maintain technological leadership and security priorities across Europe. Though each country maintains its own policies and military, the E3 works as a platform to foster interoperability and collective defense initiatives among these key nations.