A nuclear weapons-free world(NWFW) has been advocated and welcomed recently.However,the realization of a NWFW is quite difficult.The author believes that it is more realistic to build a nuclear weapons-free zone(NWFZ) than it is to build a NWFW,at least in the short term.She analyses the significance of NWFZs and issues confronting the existing zones and pointed out how to create more NWFZs.
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