Hitler had not traveled abroad or read extensively, and as such, his foreign policy grew out of his domestic concerns. Foreign policy's ultimate goal was the sustenance of its people and so domestic concerns were tightly connected and complementary to foreign policy initiatives. Thus, the traditional separation of domestic and foreign policy do not apply in the same way to German policy under the National Socialists. The domestic situation informed foreign policy goals, and foreign policy requirements demanded certain domestic organization and mobilization. It is clear, however, that what appears as opportunism in the conduct of Nazi foreign policy was actually the result of plans conceived well before Hitler assumed power, in line with his long-term theories of political vitality based on historical experience.