The Non-Proliferation of Nuclear Weapons Treaty which became effective on March 5,1970 has achieved much in the last 50 years, though the pace of change has dwindled recently. The initial progress was rapid, reducing the nuclear weapons in the world by around 90% from Cold War levels, but the final goal of complete disarmament is not on the horizon.
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At a lesser pace
The number of nuclear weapons declined rapidly from the Cold War peak of 70,300 nuclear warheads in 1986 to around 14,000 as of mid-2019. But the rate of reduction has been progressively slowing in the past 25 years. The graph plots estimated global nuclear warhead inventories.
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Action ready
Of the 14,000-odd estimated warheads, only around 9,500 are in military service with the rest awaiting dismantlement. The graph shows warheads that has been retired, stockpiled and strategically deployed.
The nine nations
Notwithstanding the former U.S. President John F. Kennedy's prediction that by 1975, there will be 10 to 20 nuclear states, the NPT has helped confine the count to nine.
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The map plots the number of estimated warheads possessed by these countries as of mid-2019.
The U.S, Russia, and the U.K. are reducing their inventories, France and Israel have relatively stable inventories, while China, Pakistan, India, and North Korea are increasing their warheads. As many as 1,800 U.S., Russian, British and French warheads are on high alert, ready for use on short notice.
Source: Federation of American Scientists (FAS); Arms Control Association
