On March 31, Chinese President Xi Jinping will be among world leaders attending the fourth and last Nuclear Security Summit in Washington, D.C., where they will try to strengthen nuclear security to deal with the evolving threat of nuclear terrorism. Such efforts are badly needed, in light of the facts that there have been approximately 20 documented cases of theft or loss of highly enriched uranium or plutonium (although more may have occurred) since the early 1990s,and that there are nearly 2,000 metric tons of dangerous nuclear materials scattered across hundreds of sites around the globe.
Bulletin of Atomic Scientists 24th March 2016 read more »