Much has been achieved in the secure management of nuclear material since the attacks on the United States in September 2001 prompted a renewed focus on the risks of terrorism. Many countries have instituted effective measures to prevent the theft, sabotage, or illegal transfer of nuclear or other radioactive material, and security at many nuclear facilities has been improved.
自2001年9月美国遭遇袭击促使人们重新开始关注恐怖主义风险以来，人们在确保核材料安全管理方面取得了重大成就。许多国家采取了有效措施防止失窃、破坏或非法运输核和其他放射性材料，而许多核设施的安全也得到了改进。但还有许多事情要做。