Some light reading:

U.S. Cold War Nuclear Target Lists Declassified for First Time

According to 1956 Plan, H-Bombs were to be Used Against Priority “Air Power” Targets in the Soviet Union, China, and Eastern Europe

Major Cities in Soviet Bloc, Including East Berlin, Were High Priorities in “Systematic Destruction” for Atomic Bombings

Plans to Target People (“Population”) Violated International Legal Norms

SAC Wanted a 60 Megaton Bomb, Equivalent to over 4,000 Hiroshima Atomic Weapons