[cryptonector]

Part of the problem is that 100-megaton bombs are probably built with Uranium-238 tampers and are extremely dirty. To use even one of those would cause enormous problems for all parties including the one deploying it. It's not something you want to do.

I suspect these UUVs have no such tamper and a yield more in the 30-megaton range for this reason. These would still be more than enough to kill many millions each.

My guess too is that these wouldn't be detonated underwater -- not much rise above water would be needed to wreck havoc.

My biggest concern is that these would likely be dead-hand weapons, with many possible failure modes leading to attack.

We should be willing to share space-based early warning data and technology with the Russians to head off this crisis. Alternatively go back to the old fuzes, but sharing early warning satellite tech is easier.

[rdtsc]

> We should be willing to share space-based early warning data and technology with the Russians to head off this crisis.

That's interesting to think about. It makes logical sense at first, but I doubt it is realistic.

Thinking about it some more, it seems having a better detection capability means having a higher chance of shooting the missiles down. That can then be used by the aggressor to dampen a retaliatory attack. (Say we give it to Russia. They attack first. Then when we retaliate, they use our advanced system to know the trajectories of the incoming missiles and use that to shoot them down. Our retaliatory attack fails and we lose).