The US secretary of state opens his term by reaffirming Washington’s commitment to the Philippines and other regional allies.

The Philippines alleges Chinese activities, including dredging, coral harvesting, and the construction of artificial islands, have caused significant and irreversible damage to coral reefs and marine biodiversity. China has accused the Philippines of causing damage to the Second Thomas Shoal by intentionally grounding a warship there in 1999.

The United States is not a party to the issue of the South China Sea and has no right to interfere in maritime issues between China and the Philippines, Foreign Ministry spokeswoman Mao Ning said on Thursday after Washington and Manila made unwarranted remarks against Beijing.

New U.S. Secretary of State Marco Rubio discussed China's "dangerous and destabilizing actions in the South China Sea" with his Philippine counterpart on Wednesday and underscored the "ironclad" U.S.

Secretary of State Marco Rubio said the US remained committed to the Philippines' defense as tensions simmer with Beijing in the South China Sea.