U.N. nuclear chief warns of 'dirty bomb' threat
More action is needed to stop militants acquiring plutonium or highly-enriched uranium that could be used for atomic bombs, nuclear experts and government officials said on Monday.
Speaking at a meeting in Vienna, Yukiya Amano, head of the International Atomic Energy Agency (IAEA), warned against a "false sense of security" over the danger of nuclear terrorism.
Amano, holding up a small lead container said to have been was used try to traffic highly enriched uranium in the former Soviet Republic of Moldova two years ago, said it showed a "worrying level of knowledge on the part of the smugglers".
"This case ended well," he said. "Unfortunately, we cannot be sure if such cases are just the tip of the iceberg."
Analysts say radical groups could theoretically build a crude but deadly nuclear bomb if they have the money, technical knowledge and the amount of fissile material needed.
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