US,  The The move - making There are about 1,440 tonnes of highly enriched uranium (HEU) and 500 tonnes of plutonium stockpiled and in nuclear arms globally, says the Nuclear Security Governance Experts Group (NSGEG) lobby group. Most of it is under military guard but some for civilian uses is less stringently secured. Analysts say that radical groups could theoretically build a crude but deadly nuclear weapon if they had the money, technical knowledge and materials needed. "With this accomplishment (in But, "highly enriched uranium still exists in too many places where there are viable alternatives," said Moniz. Refined uranium fuels nuclear energy reactors but, if processed further, can also form the fissile core of nuclear bombs. Highly-enriched uranium has traditionally been used for research reactors, making such plants especially sensitive. The first uranium shipment from The U.N. nuclear agency and In the previous such case, the White House said in April that the Obtaining weapons-grade fissile material poses the biggest challenge for militant groups, so it must be kept secure both at civilian and military facilities, experts say. A fairly simple-to-design bomb would require about 50-60 kg of highly enriched uranium, the NSGEG said. More sophisticated devices would need less material, experts say. The He also said he had asked Japanese officials during the week-long nuclear security conference in But Japan's plans for a major nuclear fuel reprocessing facility - which would yield plutonium for the recycling of spent reactor fuel - is "clearly a sovereign choice in terms of how Japan operates its fuel cycle", he said. In May, the Wall Street Journal said |
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Reuters
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