Is North korea performing Nuclear Weapons Tests for Iran?

Telltale Isotopes Hint at North Korea Weapons Test Science 10 February 2012: 643.DOI:10.1126/science.335.6069.643-a





The paper, Radionuclide Evidence for Low-Yield Nuclear Testing in North Korea in April/May 2010, is authored by Lars-Erik De Geer, Research Director at the Swedish Defence Research Agency, Stockholm.



This book is very interesting to me at least:

Detect and Deter: Can Countries Verify the Nuclear Test Ban?

By Ola Dahlman, Jenifer Mackby, Svein Mykkeltveit, Hein Haak