IAEA explain how to transport dangerous nuclear material

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An international project is under way to move nuclear materials into secure facilities so they do not fall into the hands of terrorists.

On Wednesday a convoy of radioactive material arrived in Russia from Serbia, at the end of a long journey via a secret route.

As the shipment was being loaded onto a train outside the town of Subotica, John Kelly of the International Atomic Energy Agency explained to Gordon Corera why the level of security was so high.

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