Close involvement of members will be important in the development of defence capacity and permanent structured cooperation, the fulfilment of commitments to mutual assistance and solidarity, response to hybrid operations, and cooperation with NATO in the development of capabilities and activities in crisis areas. The Republic of Slovenia will respect the principle of a single set of forces and capability development. Coordination in counteracting cyber and hybrid threats and active participation in the development of military mobility will be important for Slovenia’s national security on the basis of the Joint Declaration of the European Union and NATO. A cohesive and credible European Union strengthens NATO's European pillar as the foundation of Europe's collective defence and transatlantic ties, and enhances the role of the European Union as a global security and defence actor. Regional and bilateral cooperation will be an important complement to cooperation in a multilateral context for the Republic of Slovenia. Enhanced cooperation with our allies and strategic and other defence and security partners, based on similar interests, objectives and starting points, will focus on the joint building of specific capabilities, the implementation of modernization projects, participation in international operations and missions, the implementation of joint training and exercises, the transfer of experience in defence and security, and potential joint action within different international organizations. Cooperation with the countries of the Western Balkans will also be enhanced in order to strengthen the Euro-Atlantic integration of these countries. 13