I'd agree with this... I believe any leader who has the power and access to use nukes would not say they would not use them, otherwise, why have them in the first place. For most rational leaders/countries, nukes are a supposed deterent. They are not built to be used, but for the threat of the potential to use them if needed. The UK falls into this category. I would hope that no ruler will be foolish enough to pull the trigger again, as retaliation is the only response and then we are all f$&k!d
... it seems this is all a game of 'consequences'... but at a huge cost to us all