A general Pact on security has been the central purpose towards which these efforts have, ever since the League was born, tended to converge. The Treaty of Guarantee which, in the initial stages of its development, its members had considered and discussed; the debate on the Geneva Protocol, the discussion of which, at a later period, aroused among the nations, both within the League and outside it, such fierce controversy; the subsequent proposal for a United States of Europe and for the economic unification of that continent; and last but not least the policy of sanctions initiated by its members, may be regarded as the most significant landmarks in its checkered history. That no less than fifty nations of the world, all members of the League of Nations, should have, after mature deliberation, recognized and been led to pronounce their verdict against an act of aggression which in their judgment has been deliberately committed by one of their fellow-members, one of the foremost Powers of Europe; that they should have, for the most part, agreed to impose collectively sanctions on the condemned aggressor, and should have succeeded in carrying out, to a very great measure, their decision, is no doubt an event without parallel in human history. For the first time in the history of humanity the system of collective security, foreshadowed by Bahá’u’lláh and explained by ‘Abdu’l-Bahá, has been seriously envisaged, discussed and tested. For the first time in history it has been officially recognized and publicly stated that for this system of collective security to be effectively established strength and elasticity are both essential—strength involving the use of an adequate force to ensure the efficacy of the proposed system, and elasticity to enable the machinery that has been devised to meet the legitimate needs and aspirations of its aggrieved upholders. For the first time in human history tentative efforts have been exerted by the nations of the world to assume collective responsibility, and to supplement their verbal pledges by actual preparation for collective action. And again, for the first time in history, a movement of public opinion has manifested itself in support of the verdict which the leaders and representatives of nations have pronounced, and for securing collective action in pursuance of such a decision.