According to the Financial Times on Sunday, U.S. Navy Chief of Operations Admiral John Richardson said he issued a warning to Chinese Vice Admiral Shen Jinlong in January that America will begin treating aggressive actions by non-naval ships as military acts of aggression.
"U.S. ships freely passing through the Taiwan Strait is part of the mission of carrying out the Indo-Pacific strategy", it said in a statement.
Navy Cmdr. Clay Doss, a spokesman for the Seventh Fleet, said the mission "demonstrates the USA commitment to a free and open Indo-Pacific".More news: Australian Claire Polosak becomes first woman to umpire men's ODI
Two Navy destroyers cruised through the Taiwan Strait on Sunday and Monday, the latest in a series of transits that challenge China's claims of sovereignty over the strategic waterway.
The two destroyers were identified as the William P. Lawrence and Stethem.
While Chinese vessels shadowed the USA warships during the transit, officials said that all interactions were "safe and professional". Taiwan's' defense ministry has confirmed the voyage.More news: Google Pixel 3a Spotted On Geekbench, Just Days Ahead Of Its Unveiling
He said Beijing had expressed concerns to the French government following a similar maneuver by one of its warships last week. Despite the lack of formal diplomatic ties, Taiwan is a key USA ally and provider of defensive weapons.
In Beijing, Geng told a daily news briefing that the Taiwan issue is "the most important and sensitive issue" in Sino-US relations, CNA reported.
In the past, the United States only disclosed passages through the Taiwan Strait in a press release, Lu said. China has repeatedly sent military aircraft and ships to circle the island on drills in the past few years and worked to isolate it internationally, whittling down its few remaining diplomatic allies.More news: Measles cases reach record high with 704 reported in US