< BackThe evolution of Spain's foreign policy during the 19th and 20th centuries highlights the diatribes and limitations of its minor role, not only in terms of influence, but also in its participation and place within the international systems and orders that followed from the Concert of Europe to the reshaping of the international system after the Cold War. The nature of the international system, therefore, is key to understanding the history of Spain's international relations in the contemporary period and to comprehending the challenges, expectations and difficulties inherent to the international position of Spain in the world.