According to the latest agreement of the European Council, third countries will be allowed to join the European Military Project. But their participation will depend if they can add substantial value to respective projects being carried out and when such participation will not lead to dependencies on third states. Besides, any third country participant need also to be agreed and respect the values of the European Union has, and the principles of good neighbor relations with the Member States. Therefore, the approach toward participation undoubtedly satisfies only the closest partners of choice like the United States, Norway, and the United Kingdom.
Third countries can contribute relevant capacities for military operations, technological know-how as well as research and development. Their participation also facilitates closer EU working relationships with neighbors and non-EU NATO allies, helping safeguard NATO unity. For instance; Norway — an EU-oriented country with a third of its exports going to the bloc. As the only member of the European Free Trade Association that is both part of the European Economic Area and host to notable defense industry, Norway would be a substantial contributor to PESCO projects, from research programs to the joint development and acquisition of defense capabilities initiatives.