Yeah, and it could have been 100 megatons. But they chickened out. As I understand it, the Soviet Union was way behind the US in modern electronics. Including

Yeah, and it could have been 100 megatons. But they chickened out. As I understand it, the Soviet Union was way behind the US in modern electronics. Including targeting systems for reentry vehicles. But they were perhaps even ahead on launch capacity. That's why they focused on such large bombs. They could deliver them, but they didn't need to worry so much about how accurately.