The troll approved use of a very large bomb to attack PISSI's tunnels in Afghanistan. The bomb's blast is destructive up to a mile away.

Previously, the US had refrained from using this bomb out of concern for casualties to civilians.

The likely quantity of civilian casualties would depend on how many civilians are to be found in the area. One extreme is that the area is deserted with no reason for concern. The other extreme is that it is a city with thousands of civilians within a mile. Does anyone know how it was this time?

Aside from that, I don't think the size of this bomb makes any ethical difference.