China warns US Navy after ship sails by Chinese island

China’s Foreign Ministry said authorities monitored and warned the USS Lassen as it entered what China claims as a 21km territorial limit around Subi Reef in the Spratly Islands archipelago, a group of reefs, islets, and atolls where the Philippines has competing claims.
“The actions of the US warship have threatened China’s sovereignty and security interests, jeopardised the safety of personnel and facilities on the reefs, and damaged regional peace and stability,” the ministry said on its website.
“The Chinese side expresses its strong dissatisfaction and resolute opposition,” the statement said.
The sail-past fits a US policy of pushing back against China’s growing assertiveness in the South China Sea.
US ally the Philippines welcomed the move as a way of helping maintain “a balance of power”.