Minor in comparison to the scale of a country. Especially if you consider that the yield you can expect from anyone who is not Russia or the US will level at most <i>a district</i> of a large western city.<p>In no way I want to imply that such an event would not be absolutely horrible and an act of evil. But considering the <i>actual</i> damage that nukes do is what finally cured me of being scared shitless of nuke-wielding terrorists. And yes, I used to be <i>really</i> scared of that.