In recent years, a major focus of China’s military has been the development of an operational concept to deny or make costly access to areas of the Western Pacific for potential adversaries. This concept is commonly referred to in the United States defense planning community as anti-access/area denial (A2/AD). It emphasizes the use of long range striking power aided by sensors, largely in the form of ballistic and cruise missiles, to hit naval surface forces and fixed targets on land. Surface-to-air-missiles and fighter planes guard these weapons from enemy air strikes while stealthy diesel submarines and missile-equipped surface ships pose an additional threat to naval forces operating in the area. The A2/AD concept also envisions strikes on enemy space-based sensors and communications. This system is designed to destroy or prevent enemy forces entering a given sea or air space.