Tsar Bomba the biggest bomb ever detonated in human history, only had a fireball radius of 4.6km US scientists believe its 57 MT russians 50 MT.
Keep in mind due to weight, size and cost restrictions the yield of the individual warheads contained in a MiRV ICBM was under 20 kt each. SLBMs contained probably the same size due to uniformity reasons.
The evil empire was always pretty far behind the curve in most high tech fields, many of which are necessary for ICBM accuracy, so they instead put a lot of resources into building huge dumb boosters with enormous throw weights that could deliver multimegaton warheads that would do the job with a 5 mile miss. Their MIRVs of the 70s ran 1-3 megatons each.
So, Otaku6, you are telling me that in the 60’s, there was no 10 MT bomb on a russian rocket?
Huh. I guess the teachers lied.
“Da, Komrad - the potatoes, they stack from here to the foot of God!”
“Komrad, this is the Soviet Union. There is no God.”
“Good, because there are no potatoes, either.”