The present level of armaments could be taken as the starting point. It could be stipulated in an international treaty that these armaments should be simultaneously and uniformly reduced by a certain proportion in all countries.
So long as peace is not attained by law (so argue the advocates of armaments) the military protection of a country must not be undermined, and until such is the case disarmament is impossible.
Thus, if armaments were curtailed without a secure peace and all countries disarmed proportionately, military security would have been in no way affected.