This is a rather academic question (which is ok). But we have to understand that at the same time it is far removed from the realities of human society and the modus-operandi how state and inter-state relationships function, and how subjects respond to the applied "force-field". There is another option to solving the question, let everyone have a gun (assured mutual-annihilation on local and state scale). Of cause, while several philosophers argued for this point, it remains in the same stratospheric realm as "no guns for anyone". However, I would submit an opinion that a third option exists, creating a global village (no states), then there is no need for inter-state violence. This, I hope in some very distant future will happen, similar to a single living body made of various organs, a global civilization will emerge, having local culture and information exchange, as well as a global means of communication (single universal language and protocols). I suppose, this is also somewhere in the stratosphere.