But that has begun to change. In the mid-1990s, China started to put into place the pieces of what Pentagon planners refer to as an “anti-access capability.” In other words, rather than trying to match American power plane for plane and ship for ship, Beijing has sought more cost-effective ways to neutralize it. It has been building large numbers of relatively inexpensive but highly accurate non-nuclear ballistic missiles, as well as sea- and air-launched cruise missiles. Those weapons could destroy or disable the handful of ports and airfields from which American air and naval forces operate in the Western Pacific and sink warships whose weapons could reach the area from hundreds of miles out to sea, including American aircraft carriers.

The Chinese military has also been testing techniques for disabling American satellites and cybernetworks, and it is adding to its small arsenal of long-range nuclear missiles that can reach the United States.

Although a direct confrontation seems unlikely, China appears to seek the option of dealing a knockout blow to America’s forward forces, leaving Washington with difficult choices about how to respond.

Those preparations do not mean that China wants war with the United States. To the contrary, they seem intended mostly to overawe its neighbors while dissuading Washington from coming to their aid if there is ever a clash. Uncertain of whether they can rely on American support, and unable to match China’s power on their own, other countries may decide they must accommodate China’s wishes.

In the words of the ancient military theorist Sun Tzu, China is acquiring the means to “win without fighting” — to establish itself as Asia’s dominant power by eroding the credibility of America’s security guarantees, hollowing out its alliances and eventually easing it out of the region.