It was known as Mutually Assured Destruction. A fancy way of saying suicide.
Destruction of the Soviet Union and China, but not of the United States.
In the 1960's Soviet ICBMs were liquid fueled and kept in shelters or pits with empty tanks. They required 1-2 hours to bring them in readiness for launch.
By the time Soviet ICBMs were ready to launch, they would have already been destroyed.
More than 70% of the Soviet bomber force would be destroyed on the ground.
The bombers that did get off the ground would be detected by our DEW line radars, intercepted and destroyed.