Nope. A greater public awareness and a more personalised up-to-the-second news coverage of conflicts means that, as ill-informed by the news media as people may be in some situations, they are still going to hold some opinion. I seriously doubt that the overwhelming majority of people in a western democracy would stand for the use of nuclear weapons by their government and I think that almost all government leaders know this. As such their effectiveness as a deterent is really a non-issue in my book, because everyone knows that the other guy isn't going to use them anyway. As for Russia (which can hardly be considered democratic), I just can't see them risking it.