There have been over 30 "wars" since WW2, most lesser regional conflicts. Nuclear powers have been involved in many of them, although none directly against each other except Pakistan and India on a limited scale.
M.A.D. Is the reason that it hasn't and won't happen.
The main risk of nuclear war now is a terrorist nuclear strike and how the attacked country responds.
Regardless of the response, it is highly unlikely that any 3rd party is going to get involved because of Mutually Assured Destruction.
That is why conventional strength is growing more important. Nobody can risk pushing the button.

By the way, that Kentucky loss bit the big one! Last week too!!

Saucey,
Don't kid yourself into thinking Russia is a third rate power.They are not and Putin is no pussy.

I didnt say they were pussy's but they have no money for war right now and there in the hole