Not so much the path of least resistance(Nukes are detonated at altitude so that terrain doesn't get in the way) as that the blast radius is the cube root of the yield. And the area goes up with the square of the radius.
So 8 bombs of 1/8th the size blast twice the area.
Not so much the path of least resistance(Nukes are detonated at altitude so that terrain doesn't get in the way) as that the blast radius is the cube root of the yield. And the area goes up with the square of the radius.
So 8 bombs of 1/8th the size blast twice the area.
Same reason cluster bombs are a thing.
Yes, that is a succinct explanation. Blast waves are omnidirectional and they don't change directions due to resistance.