In a word, the proposal for reduction of armaments only becomes really feasible when it is linked with a provision for reversing the _motives_ which lead nations to increase their armed forces. Once bring to bear upon the Governments of States a clear recognition of the two related facts: first, that by no increase of their armed force will they be reasonably likely to succeed in any aggressive design upon a neighbor; second, that by the pledged cooperation of their cosignatories they are not dependent for defense upon their own force alone, then obvious motives of economy and self-interest will lead them to reduce their armaments. Though the military caste may still plead the instability of pacific agreements and the disciplinary advantages of National Service, while contractors for armaments do their best to sow dissension among the leagued Powers and to arouse the military ambitions of new nations, these war interests would no longer be able to play as heretofore upon the fears and passions of the peoples. For whatever the secret political and business policy behind the race for armaments, its engineers could only make that policy effective by periodic appeals to the menace of invasion. Once make it manifest that no evil-minded foreigner can threaten aggression against one country without meeting an overwhelming strength of leagued forces, to which one particular contribution is not of determinant importance, and the balance of national motives leans heavily and constantly towards smaller and less expensive forces. [Sidenote: Must make it too dangerous for one Power to attack another.] The absolute strength of the rational and moral case against war and militarism has in some degree obscured the fact that, so long as pushful statesmen and diplomatists, ambitious soldiers, covetous financiers, and war-traders were able to stimulate and carry out aggressive policies of conquest and aggrandizement on the part of stronger against weaker States, the apprehensions upon which these same interests played in urging the necessity of large expenditure upon defense were not unreasonable. It is only by making it too obviously difficult and dangerous for any one Power to attack any other Power that the balance of reasonable motives is firmly weighted against armaments. This can only be achieved by substituting for a world of isolated independent States, or of Balances of Power, a world in which the united strength of a sufficient number of States is brought to bear immediately and certainly against any disturber of the public peace.