Oldish news - Russia and other countries in the region confirmed the blast to within hours tho had ranging estimates of size from half to 15 kilotons.
Assume this thread started because the US just elected to confirm their version of findings - after a load of propaganda claiming "something went wrong" and possible failed test. (Is that not why there are tests??

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The recent announcement from Negroponte is that the test was less than a kiloton. Gotta seriously doubt all the crap that is uttered - it's obvious they are clueless tho matters little what size - all nuke activity from any nation is a problem.