The three lectures collected in this volume were prepared without any intention of publication. They were delivered for the purpose of drawing attention to the links which connect the proposal for a League of Nations with the past, to the difficulties which stand in the way of the realisation of the proposal, and to some schemes by which these difficulties might be overcome. When it was suggested that the lectures should be brought before the public at large by being issued in book form I hesitated, because I was doubtful whether the academic method natural to a University lecture would be suitable to a wider public. After consideration, however, I came to the conclusion that their publication might be useful, because the lectures attempt to show how the development initiated by the two Hague Peace Conferences could be continued by turning the movement for a League of Nations into the road of progress that these Conferences opened.

Professional International lawyers do not share the belief that the outbreak of the World War and its, in many ways, lawless and atrocious conduct have proved the futility of the work of the Hague Conferences. Throughout these anxious years we have upheld the opinion that the progress initiated at the Hague has by no means been swept away by the attitude of lawlessness deliberately—'because necessity knows no law'—taken up by Germany, provided only that she should be utterly defeated, and should be compelled to atone and make ample reparation for the many cruel wrongs which cry to Heaven. While I am writing these lines, there is happily no longer any doubt that this condition will be fulfilled. We therefore believe that, after the map of Europe has been redrawn by the coming Peace Congress, the third Conference ought to assemble at the Hague for the purpose of establishing the demanded League of Nations and supplying it with the rudiments of an organisation.

How this could be accomplished in a very simple way the following three lectures attempt to show. They likewise offer some very slight outlines of a scheme for setting up International Councils of Conciliation as well as an International Court of Justice comprising a number of Benches. I would ask the reader kindly to take these very lightly outlined schemes for what they are worth. Whatever may be their defects they indicate a way out of some of the great difficulties which beset the realisation of the universal demand for International Councils of Conciliation and an International Court of Justice.

It is well known that several of the allied Governments have appointed Committees to study the problem of a League of Nations and to prepare a scheme which could be put before the coming Peace Congress. But unless all, or at any rate all the more important, neutral States are represented, it will be impossible for an all-embracing League of Nations to be created by that Congress; although a scheme could well be adopted which would keep the door open for all civilised States. However, until all these States have actually been received within the charmed circle, the League will not be complete nor its aims fully realised. Whatever the coming Peace Congress may be able to achieve with regard to a scheme for the establishment of the League of Nations, another—the third—Hague Peace Conference will be needed to set it going.

L. OPPENHEIM.

P.S.—While this Preface and volume were going through the Press, Austria-Hungary and Germany surrendered, and unprecedented revolutions broke out which swept the Hapsburg, the Hohenzollern, and all the other German dynasties away. No one can foresee what will be the ultimate fate and condition of those two once mighty empires. It is obvious that, had the first and second lectures been delivered after these stirring events took place, some of the views to be found therein expressed would have been modified or differently expressed. I may ask the reader kindly to keep this in mind while reading the following pages. However, the general bearing of the arguments, and the proposals for the organisation of the League of Nations and the establishment of an International Court of Justice and International Councils of Conciliation, are in no way influenced by these later events.