Conventional warfare is a form of warfare conducted by using conventional military weapons and battlefield tactics between two or more states in open confrontation. The forces on each side are well-defined, and fight using weapons that primarily target the opposing army. It is normally fought using conventional weapons, and not with chemical, biological, or nuclear weapons.
The general purpose of conventional warfare is to weaken or destroy the opponent's military force, thereby negating its ability to engage in conventional warfare. In forcing capitulation, however, one or both sides may eventually resort to unconventional warfare tactics.
I look at it a football game, one team wants to beat the other, does the choach think they can win by unconvential tactics by using steroids, money etc to win? In war ther are no rules if you are to win. Read Grant, Crazy Horse, Hackworth, Patton.
There is no such thing as a "conventional warefare" between Russia and the USA today because the leadership knows it will become unconvential warfare if that occurs.
Krushcehev knew the consequenses in 1961 that final day in October what was at stake.
My opinions only.
Cheers, Mike