Why Russia cannot ‘sober up the West’ by using a nuclear bomb

The nuclear weapons taboo is undoubtedly weakening, but Moscow shouldn’t be the first to break it Professor Sergey Karaganov’s ... ... but just a local one. It is reasonable to ask here why an atomic attack on another nuclear-armed state or bloc [in this case NATO] would not quickly escalate into the same thermonuclear all-out war, i.e. an exchange of fire between Russia and the US? ...