I don't necessarily think it would be a contradiction. When I was talking about a reduction of nuclear stockpiles, I wasn't necessarily talking about full prohibition or relinquishing or destroying all nuclear weapons. It's looking at strengthening the global regime, for instance to prevent states like North Korea, Iran, and others from acquiring nuclear weapons, but at the same time working with major states like Russia and the United States to reduce their stockpiles.
I don't necessarily see it as joining the movement toward prohibition, although I'm saying realistically over the long term I think that's where it has to be moving.