[NELSON111]

>>>Big one! What’s the estimated yield, I wonder?

B/W 1.3-1.5 KT maybe?

[amorphous]

B/W 1.3-1.5 KT maybe?

I dunno 'bout that...

Looking around and found this:

"The largest underground thermonuclear tests conducted by the US were detonated in Amchitka at the western end of the Aleutian Islands and the largest of these was the 5 megaton codename Cannikin test which occurred on November 6, 1971. Cannikin had a body wave magnitude of 6.9"

https://www2.usgs.gov/faq/node/3339

[VanShuyten]

Small enough to fit on their rockets, or the Iranian ones.