[Elendur]

I think that Israel will wait until Iran successfully performs an underground test before initiating military action.
///
why would they waste their precious tiny amount on an underground test?
...instead of testing it on a ship in NY or Tel Aviv harbor?

[2001convSVT]

The same reason why we did the Trinity test in July of 45. They must be sure it works before mass producing the design. The North Koreans are planing another test, it could be an Iranian design, the last test they did were in the 2 to 4 it range. A plutonium design should be in the 17 to 20 kt range.