China's top newspaper, decrying Washington as a trouble-maker, said on Monday U.S. moves in the South China Sea like last week's freedom of navigation operation will only cause China to strengthen its deployments in the disputed waterway.
China's foreign ministry said the USS Hopper destroyer came within 12 nautical miles of Huangyan island, which is better known as the Scarborough Shoal and is subject to a rival claim by the Philippines, a historic ally of the United States.
It was the latest U.S. naval operation challenging extensive Chinese claims in the South China Sea and came even as President Donald Trump's administration seeks Chinese cooperation in dealing with North Korea's missile and nuclear programmes.
The ruling Communist Party's official People's Daily said in a commentary that, with the situation generally improving in the South China Sea, it was clear that the United States was the one militarizing the region.
"Against this backdrop of peace and cooperation, a U.S. ship wantonly provoking trouble is singleminded to the point of recklessness," the paper said.
"If the relevant party once more makes trouble out of nothing and causes tensions, then it will only cause China to reach this conclusion: in order to earnestly protect peace in the South China Sea, China must strengthen and speed up the building of its abilities there," it said.
The commentary was published under the pen name "Zhong Sheng", meaning "Voice of China", which is often used to give the paper's view on foreign policy issues.
The Scarborough Shoal is located within the Philippines' 200 nautical mile Exclusive Economic Zone but an international tribunal in 2016 ruled that it is a traditional fishing ground that no one country has sole rights to exploit.
The U.S. military says it carries out "freedom of navigation" operations throughout the world, including in areas claimed by allies, and that they are separate from political considerations.
The Pentagon has not commented directly on the latest patrol but said such operations are routine.