US Warns on Growing Nuclear Arsenals of China, Russia, North Korea

US Warns on Growing Nuclear Arsenals of China, Russia, North Korea
This photo taken on Nov. 29, 2017 and released on Nov. 30, 2017 by North Korea's official Korean Central News Agency (KCNA) shows launching of the Hwasong-15 missile which is capable of reaching all parts of the US. KCNA VIA KNS/AFP/Getty Images
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GENEVA—North Korea may be only months away from being able to strike the United States with a nuclear-tipped ballistic missile and its atomic weapons program must be shut down, a senior U.S. disarmament official said on Tuesday.

U.S. disarmament ambassador Robert Wood, addressing the U.N.-sponsored Conference on Disarmament in Geneva, also warned that arsenals in China and Russia were expanding.