China now has one of the world’s biggest attack-submarine fleets

China’s increasingly potent and active sub force represents the rising power’s most significant military challenge yet for the region. Its expanding undersea fleet not only bolsters China’s nuclear arsenal but also enhances the country’s capacity to enforce its territorial claims and thwart U.S. intervention.

China is expected to pass another milestone this year when it sets a different type of sub to sea—a “boomer,” carrying fully armed nuclear missiles for the first time—says the U.S. Office of Naval Intelligence, or ONI .... http://online.wsj.com