Notwithstanding the large German population in this country and the propaganda which we now know that the German Government had systematically carried on for years in our very midst, the invasion of Belgium and the atrocities committed by the Germans soon arrayed opinion on the side of the Allies. This was not a departure from neutrality, for it should be remembered that neutrality is not an attitude of mind, but a legal status. As long as our Government fulfilled its obligations as defined by the law of nations, no charge of a violation of neutrality could be justly made. To deny to the citizens of a neutral country the right to express their moral judgments would be to deny that the world can ever be governed by public opinion. The effort of the German propagandists to draw a distinction between so-called ethical and legal neutrality was plausible, but without real force. While neutrality is based on the general principle of impartiality, this principle has been embodied in a fairly well-defined set of rules which may, and frequently do, in any given war, work to the advantage of one belligerent and to the disadvantage of the other. In the Great War this result was brought about by the naval superiority of Great Britain. So far as our legal obligations to Germany were concerned she had no cause for complaint. If, on the other hand, our conduct had been determined solely by ethical considerations, we would have joined the Allies long before we did. The naval superiority of Great Britain made it comparatively easy for her to stop all direct trade with the enemy in articles contraband of war, but this was of little avail so long as Germany could import these articles through the neutral ports of Italy, Holland, and the Scandinavian countries. Under these circumstances an ordinary blockade of the German coast would have had little effect. Therefore, no such blockade was proclaimed by Great Britain. She adopted other methods of cutting off overseas supplies from Germany. She enlarged the lists of both absolute and conditional contraband and under the doctrine of continuous voyage seized articles on both lists bound for Germany through neutral countries. As to the right of a belligerent to enlarge the contraband lists there can be no doubt. Even the Declaration of London, which undertook for the first time to establish an international classification of contraband, provided in Article 23 that "articles and materials which are exclusively used for war may be added to the list of absolute contraband by means of a notified declaration," and Article 25 provided that the list of conditional contraband might be enlarged in the same manner. Under modern conditions of warfare it would seem impossible to determine in advance what articles are to be treated as contraband. During the Great War many articles regarded in previous wars as innocent became indispensable to the carrying on of the war.