Two U.S. warships have sailed through the Taiwan Strait in an apparent show of support for the government of the island.
South China Sea
The Chinese navy asked the vessels to leave after they entered waters adjacent to Gaven and Chigua reefs in the Spratlys.
The amphibious assault ship Wasp made its way to the Philippines with at least 10 F-35B Joint Strike Fighter jets aboard.
Vice Adm. Phillip Sawyer told reporters that Washington protested that "unprofessional behavior" by the Chinese ship.
A Coast Guard vessel and a Navy ship passed through the Taiwan Strait this weekend in a signal to China.
The Philippines could become embroiled in a conflict because of its 1951 Mutual Defense Treaty with Washington.
Freedom of Navigation Operations come amid China-U.S. trade talks.
The action came a week after Gen. Li Zuocheng warned the U.S. not to support an independent Taiwan.
Rep. Joe Courtney, D-Conn., says he will propose a resolution that the U.S. sign the Law of the Sea treaty.
Chief of Naval Operations Adm. John Richardson is meeting with his Chinese counterpart this week in Beijing.