Should more be done to ensure nuclear security?
The leaders of almost 50 countries have pledged to safeguard nuclear stocks and keep material out of terrorists' hands. Will this contribute to a safer world?
Earlier, Russia and the US signed an agreement to dispose of 68 tonnes of surplus weapons-grade plutonium. The combined stockpiles - 34 tonnes from each country - are said to be enough to make 17,000 nuclear warheads.
The summit took place without representatives of Iran and North Korea, who were not invited by the US due to disputes over their nuclear programmes.
Will greater international cooperation help to ensure the security of nuclear material? Is the US and Chinese agreement to pressure Iran over its atomic plans to be welcomed?
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