Does the phrase "Siberian wastelands" ring a bell? 90% of Russia is only thinly inhabited, and consequently of no interest to our military planners.
The Russian population is concentrated in two conurbations: The Greater Moscow area and the Greater St. Petersburg area. Our weapons need only focus on those two areas.
Regards,
You want to chance a nuclear war to save most corrupt country in Europe while we are drowning in national debt and more broke than people who can not get new credit cards? Are you like total nuts?