nuclear weapon

  • June 22, 2006  

    North Korea announced preparations to test a long-range ballistic missile, followed by reports that the United States readied its ground-based interceptor missile-defense system. The moves have sparked a debate about how the United States should respond to a missile threat. Continue reading

  • May 2, 2005   BY  

    In an atomic bomb, the energy or force of the weapon is derived only from nuclear fission – the splitting of the nucleus of heavy elements such as plutonium or highly enriched uranium into lighter nuclei. Continue reading

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