美国的亚洲延伸威慑战略面临的挑战,源于该地区复杂的安全困境。一些特有的安全威胁相互交织,影响着美国盟国的安全观念。亚太安全环境挑战中的重要因素朝鲜当前亚洲安全环境的一个重要特征,就是朝鲜导弹力量和核力量的增强,特别是机动洲际弹道导弹的性能可能发生质变,将在2020年前实现部署。朝鲜拥有常规近程和中程导弹,包括约 The challenge facing the U.S. extended deterrence strategy in Asia stems from the complex security plight in the region. Some unique security threats are intertwined and affect the security concepts of the U.S. allies. An Important Factor in the Asia-Pacific Security Environment Challenge An important feature of North Korea’s current security environment in Asia is the enhancement of North Korea’s missile force and nuclear forces. In particular, the performance of the mobile intercontinental ballistic missile may undergo a qualitative change and its deployment will be completed by 2020. North Korea has conventional short-range and medium-range missiles, including about