China DF-21D Anti Aircraft Carrier Ballistic Missile

China has since 2009 an operational anti-ship ballistic missile designed to destroy an aircraft-carrier in one hit. The "carrier-killer" is a two-stage hypersonic weapon that combines maneuverable reentry vehicles with terminal guidance. The target could be a moving aircraft carrier up to 2,700 kilometers away and the warhead may be many types including nuclear bomb.
For now the U.S. Navy has no defense against such weapon so the power balance over the Pacific is shifted in favor of China. This is an important card in the world scenario like Taiwan and Korea.

More: http://en.wikipedia.org/wiki/DF-21