The Defense Department's 2015 National Military Strategy calls for "greater agility, innovation, and integration," while also acknowledging that the United States' "comparative military advantage has begun to erode." In the first such strategy released since 2011, Chairman of the Joint Chiefs of Staff Army Gen. Martin E. Dempsey wrote in the intro that "today's global security environment is the most unpredictable I have seen in 40 years of service." The United States now faces "multiple, simultaneous security challenges from traditional state actors" and nonstate actors-"all taking advantage of rapid technological change," added Dempsey. "Future conflicts will come more rapidly, last longer, and take place on a much more technically challenging battlefield."
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机译：国防部的《 2015年国家军事战略》呼吁“更大的敏捷性，创新性和融合性”，同时也承认美国的“比较军事优势已经开始削弱”。在自2011年以来发布的第一个此类战略中，参谋长联席会议参谋长马丁·登普西（Martin E. Dempsey）将军在引言中写道：“今天的全球安全环境是我服役40年以来最不可预测的。” Dempsey补充说，美国现在面临“传统国家行为者和非国家行为者同时面临的多重挑战”，“它们都利用了快速的技术变革。” “未来的冲突将更加迅速，持续更长的时间，并将发生在技术难度更大的战场上。”
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