So the only reason to use tactical nukes are if you're going to use them an extreme case, or you're going to slaughter innocent citizens of a perceived enemy co

So the only reason to use tactical nukes are if you're going to use them an extreme case, or you're going to slaughter innocent citizens of a perceived enemy country in a surprise attack. But that only gets you one free surprise use. After that the world knows your intent and capabilities. So you'd still have to be prepared for an all out nuclear war. So it seems like if the president cares anything about self preservation, then nuclear weapons would only be used as a deterrent.