South China Sea: think tank calls for Beijing vigilance as US steps up surveillance of disputed waterway
- The South China Sea Probing Initiative says the US military conducted 1,200 missions over disputed waterway this year – up from 1,000 sorties last year
- ‘China must keep a close eye on the United States and take precautions,’ analyst warns while urging China not to ignore other nations’ movements

Hu Bo, director of the South China Sea Probing Initiative, said that in 2021 the US had conducted 1,200 surveillance missions using large-scale reconnaissance aircraft – up from 1,000 sorties last year – including several approaches 20 nautical miles from the baseline of territorial waters claimed by Beijing.
The US sent aircraft carrier strike groups and amphibious groups to enter the South China Sea 13 times – double the number sent in 2020.
At least 11 attack nuclear submarines sailed to the South China Sea and its surrounding waters last year, Hu said.
“Relations between China and the US have become the biggest uncertainty in the security of the South China Sea. The two nations have the most dialogue platforms but also are facing the most serious confrontation,” Hu said.
Hu made the remarks on Saturday in a forum addressing the South China Sea issue before the transcript was published on the think tank’s social media account on Monday.
He said neither nation intended to start a war, but the risk triggered by increasing military presence in the disputed waters was a concern.
“There are several sea and air encounters between the two sides in the South China Sea every day. Any improper handling or accident may lead to serious consequences,” he said.
