进入90年代后,世界形势发生了重大变化,苏联解体,东欧剧变,冷战的结束使世界大战爆发的可能性大为降低。然而,世界上不稳定的因素却并未减少,反而有明显增多与加剧的趋势。面对新的世界形势,美国开始对其军事战略进行重大调整,把战略重点由“全球性防御”转变为“地区性防御”,并明确指出新战略的核心就是“保证战略威慑力量在主要地区的前沿军事存在,并对危机能够作出有效反应以及保持国家重组军队(如果需要的话)的能 Since the 1990s, great changes have taken place in the world situation. The collapse of the Soviet Union, drastic changes in Eastern Europe and the end of the Cold War have greatly reduced the possibility of the outbreak of World War. However, the factors of instability in the world have not diminished. On the contrary, there have been notable trends of obvious increase and aggravation. In the face of the new world situation, the United States began to make major adjustments to its military strategy and shifted its strategic focus from “global defense” to “regional defense.” The article clearly states that the core of the new strategy is "to ensure that strategic deterrents are achieved in major areas Of the military presence at the forefront, and to be able to react effectively to crises and keep the national reorganization of the army (if required)