Which similarities exist with regard to Norwegian, Finnish and Swedish strategic goals, operational requirements and present or planned capabilities? To what extent does this provide a ground for widened co-operation in order to increase the military capabilities of the countries concerned? To a large extent the strategic orientation of the three countries differs. Norway prioritises crisis- and incident-management. Serious crises or national defence will be handled together with allies within NATO. Finland prioritises primarily the ability to deter from, or if needed, to repel, a military attack. Sweden directs its military capabilities primarily at participating in international operations. The most evident, and to all countries common, mission of their armed forces (for Sweden the main mission) is to contribute to international peace and security. However, none of the countries rules out territorial defence or regional crisis management. Consequently, there is a good ground for widened co-operation aimed at increasing capabilities in several areas, thereby better serving the strategic interests of the respective country. Of the Nordic countries , Finland is today leading as concerns such operational capabilities and compentencies primarily linked to territorial defence. Norway, through its alliance membership, has special compentencies for working within NATO, which Sweden and Finland are lacking. Such compentencies would, in all probability, be quite indispensable for stabilisation operations (crisis management)in the Northern European region. Sweden has capabilities and competencies, primarily linked to international operations, which could be of value to the other Nordic countries. Effective Nordic co-operartion, aimed at increased operational capabilities, demands: a more common strategic perception regarding actual military challenges, internationally and in the Northern European region, based on common strategic goals, clear demands regarding operational capabilities needed in each country or possibly together, a far-reaching harmonisation concerning doctrines, methods and equipment.