BEIJING, Feb. 18 -- After failing to get its way at the first U.S.-ASEAN summit in California, Washington appears ready to grasp at anything that could be used against China.

And the media hype over China's deployment of a surface-to-air missile system in Yongxing Island, part of the Xisha Islands in the South China Sea, just provided Washington a much-needed excuse to once again criticize Beijing for its alleged role in "militarizing" the region.

For starters, China has indisputable sovereignty over the Xisha Islands and deploying limited and necessary national defense facilities on China's own territory has nothing to do with militarization in the South China Sea.

China has repeatedly made it clear that it has no intention to militarize the region. Its activities are mainly for maintenance purposes, improving the living conditions for the stationed personnel there and providing more public goods in the region.

With trillions of dollars' worth of goods traversing the patch of water every year, the South China Sea is vital both to global trade and to China's development. Beijing has no reason to disrupt one of its own crucial arteries of trade.

Meanwhile, the United States, which has become fixated on the South China Sea since Washington announced a pivot to the Asia-Pacific, has been the primary source of destabilization in the area.

It has conducted a slew of naval and air patrol trips in the vicinity of the China-owned islands, which is in clear violation of China's sovereignty, not to mention international law.

In addition, it has also reopened military bases in the Philippines, in a move widely interpreted as stirring up tension in the region.

Furthermore, some countries in the region are taking more provocative measures to press for illegitimate territorially claims ever since the U.S. put the South China Sea on its radar.

If there were a ranking for destabilizers in the South China Sea, there's no doubt Washington would top the list.

China's practices in the region are defensive in nature, and it sees direct talks between rival claimants rather than military means as the best way to resolve any dispute.

For the sake of regional stability and the common good, let's hope the United States honor its previous commitment of not taking sides on the issue or stirring up tensions. Only then can the South China Sea be home to calm waters.