development, not coincidentally, occurred following the closure of the American frontier, with the last major battle of the Indian Wars fought in 1890. Moreover, it was domination of the Greater Caribbean Basin that gave the United States effective control of the Western Hemisphere, which, in turn, allowed it to affect the balance of power in the Eastern Hemisphere. Perhaps likewise with China in the twenty-first century.
China, by way of its 1,500 short-range ballistic missiles focused on Taiwan and its 270 commercial flights a week to Taiwan, will be able to do an end run around Taiwanese sovereignty without needing to subdue it through a naval invasion. As with the closing of the American frontier, Chinaâs effective capture of Taiwan in the years to come will allow Chinese naval planners the ability to finally concentrate their energies on the wider South China Sea, an antechamber to the Indian Ocean in which China also desires a naval presence, in order to protect its Middle Eastern energy supplies. Were China toever replace the U.S. Navy as the dominant power in the South China Seaâor even reach parity with itâthis would open up geostrategic possibilities for China comparable to what America achieved upon its dominance of the Caribbean.
To be sure, the South China Sea is no Caribbean. In fact, it is more important. The Caribbean was far from the main sea lines of communication, while the South China Sea is at the heart of them.
Because the South China Sea is where the sea lines of communication between the Horn of Africa and the Sea of Japan join together, the state that dominates the South China Sea will be a long way toward dominating the navigable rimland of the Eastern Hemisphere. Of course, the opposite is more likely to be the case: no one state will dominate the South China Sea. Another reason why the South China Sea is so important is that it is on the way to becoming the most contested body of water in the world.
The U.S. Navy presently dominates the South China Sea. But that situation will change. The size of the U.S. Navy has come down from almost six hundred warships in the Reagan era, to the mid-three hundreds during the Clinton era, to under three hundred now. It might go lower still by the 2020s, because of the retirement of current classes of submarines and surface warships, cost overruns, and future budget cuts, the result in turn of massive fiscal deficits. Meanwhile, the Chinese navy, the worldâs second most powerful naval service, is growing rather dramatically. Rather than purchase warships across the board, China is developing niche capacities in subsurface warfare and ballistic missile technology (the DF-21 missile) designed to hit moving targets at sea, such as a U.S. aircraft carrier. If China expands its submarine fleet to 78 by 2020 as planned, it will be on par with the U.S. Navyâs undersea fleet in quantity. 12 While the U.S. Navyâs submarine fleet is completely nuclear, it requires that feature to sail halfway around the world, in order to get to East Asia in the first place, even as Chinaâs diesel-electric submarines are supremely quiet and can hide better, therefore, in the congested littorals of East Asia. At somepoint, China is likely to, in effect, be able to deny the U.S. Navy unimpeded access to parts of the South China Sea.
Thus, as Chinaâs navy gets strongerâits economy permittingâand Chinaâs claim on the South China Seaâas demonstrated by its mapsâcontradict the claims of other littoral states, these other states will be forced to further develop their own naval capacities and to balance against China by relying increasingly on the U.S. Navy: a navy whose strength has probably peaked in relative terms, even as it must divert considerable resources to the Middle East. Worldwide multipolarity is already a feature of diplomacy and economics, but the South China Sea is poised to show us what multipolarity in a