Then may be every one knows that nukes are just for bluff !!! And god forbid if any real war takes place nukes may Not be used at all !!That detective, is the right question.
It is the very core business question that the global arms industry aims to address.
If we all have nuclear weapons and in the case of India and Pakistan a 10-15 minute warning at best since we all have IRBM’s; we have no chance even if both sides had current anti ballistic missile systems.. yet.. we buy them.