[Venturer]

I was thinking 20 square miles is a great area.

Sounds a bit like an exageration to me.

That;s an awful big explosion for something non-nuclear.

[muawiyah]

Maybe something using the Weak Nuclear Force ~ with no radiation or radioactive isotope residue.

Lots of folks working on this idea and there's no reason it can't be used to make a bomb or two.

[catfish1957]

One would think that a 20 square mile blast 30 miles from Teheran would have made more news (heard and felt), and had some some camera footage (I am sure Iranians have camera phomes). I think this thing is exagerated.