[Tree of Liberty]

Somewhere on the order of >1-5 kilotons. I think that'd take out about 5 city blocks, but don't quote me on that.

Our smallest (publically acknowledged) nuke, by comparison, is the Davy Crockett. I've read that, among other applications, the corps of engineers has/had plans to use it to demolish bridges and such when there wasn't time to use conventional explosives.

[HiTech RedNeck]

How would toting a tiny nuke to a bridge, etc. be quicker than shooting a missile?