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发帖数: 4825 | 1 http://www.economist.com/blogs/graphicdetail/2012/01/daily-char
Which countries are worst at protecting their weapons-grade nuclear material?
THE Economist Intelligence Unit, our sister organisation, and the Nuclear
Threat Initiative, a campaign group, have produced an index that ranks
countries by the security of their nuclear materials. The chart below shows
the 32 countries that possess over one kilogram of nuclear material suitable
for use in weapons by their ability to keep the stuff safely locked up. (
The index does not assess low-enriched uranium or materials for making "
dirty bombs".) Britain is ranked best out of countries with nuclear weapons;
nuclear-armed nations tend to have lower scores mainly because they have
big stocks of nuclear materials held in many locations. So far 19 countries,
plus Taiwan, have given up weapons-grade materials. | p***l
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