That is useful, and can go further. But these efforts relate to weapons which are, at most, significant adjuncts to military power. We cannot therefore expect to deal with nuclear weapons in the same way as soft-nosed bullets, or take the same risks about possible cheating. The second point is related to that. To suppose that such contests can ever again happen in a sealed compartment from which nuclear knowledge is excluded is fantasy.
Nuclear weapons are now ineradicably part of the continuum of possible force.
The nuclear risk permeates all war between advanced states, whether or not weapons exist initially. In a global system lacking an ultimate arbiter that can combine legitimacy and power, there can never again be a major war between advanced states without nuclear risk. That is of immense value. Propositions about war prevention are unprovable, because they rest upon conjectures about alternative history. The absence of war between advanced states is a key success.