Despite concerns about nuclear weapons over the past 60 years, there are now nine or ten nations possessing around 27,000 nuclear weapons.3 The world has been fortunate that these weapons have not been deployed so far. However, this good fortune cannot be expected to continue indefinitely. Nuclear arsenals are still justified on the basis of the deterrence principle, predicated on unproven theories developed during the past decades.4 Nuclear weapons still remain as the deadliest threat to humanity.
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Photo: Atomic weapons, Ohio. Courtesy Blondie5000, flickr, CC