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The new nuclear arms race

The new nuclear arms race

Former Defense Secretary William J. Perry, one of the nation's wise men on national security, delivered an arresting message last week: We're about to find ourselves in a new nuclear arms race.

“The danger of a nuclear catastrophe today is greater than during the Cold War,” Perry said.

The danger stems not only from terrorist groups like Islamic State, which would gladly steal or buy nuclear material on the black market, but also from the huge nuclear arsenals the United States, Russia and other big powers maintain more than 20 years after the end of the Cold War. Those nuclear forces are bigger than they need to be — almost 16,000 warheads in all. And they...

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