The Other Proliferation

By Richard Haass – Project Syndicate

But as important as this scenario is, another type of proliferation now merits attention: vertical proliferation, namely, increases in the quality and/or quantity of the nuclear arsenals of the nine countries that already possess these weapons. The danger is not only that nuclear weapons might be used in a war but also that the possibility of war would increase by emboldening governments – like Iran in the scenario above – to act more aggressively in pursuit of their geopolitical goals in the belief that they may act with impunity.