With the right POD, you can make it as big as you like
OTL, we no longer have sufficient nukes to wipe the human race ... in fact, I seriously doubt we have enough to wipe out the majority ... plus it's really hard to imagine any semi-plausible chain of events that could ever lead to a maximal exchange ...
OTL, we no longer have sufficient nukes to wipe the human race ... in fact, I seriously doubt we have enough to wipe out the majority ... plus it's really hard to imagine any semi-plausible chain of events that could ever lead to a maximal exchange ...