Waltz Responds

Issue: Sept-Oct 2010

IN 1963 President John F. Kennedy famously speculated that by 1970 ten countries would be able to deploy nuclear weapons and by 1975, fifteen to twenty countries would have followed suit.1 In fact, the number of nuclear-weapons states peaked at ten when some of the successor states to the Soviet Union were born nuclear, then the number dropped to seven, and now it stands at nine with Pakistan and North Korea having joined what remains the world’s most exclusive club.

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