Beijing — Top White House aide Jake Sullivan held talks with Chinese President Xi Jinping on Thursday, after a senior military official warned the United States to stop “collusion” with Taiwan in a rare one-on-one meeting.

Sullivan, the first U.S national security adviser to visit China since 2016, stressed the importance of stability in the tense Taiwan Strait as he met with senior Chinese army chief Zhang Youxia at the Beijing headquarters of the Central Military Commission.

The White House adviser met Xi on Thursday afternoon, state media said, as he wrapped up three days of talks with Foreign Minister Wang Yi and other high-ranking officials.

Sullivan’s visit came as China became embroiled in security rows with U.S. allies Japan and the Philippines.

“It’s rare that we have the opportunity to have this kind of exchange,” Sullivan told Zhang in opening remarks.

The two officials agreed to hold a call between the two sides’ theatre commanders “in the near future,” a readout from the White House added.

Sullivan also raised the importance of “freedom of navigation” in the South China Sea, where China and the Philippines have clashed in recent months, and “stability” in the Taiwan Strait, Washington said.

Zhang, in turn, warned that the status of the self-ruled island was “the first red line that cannot be crossed in China-U.S. relations.”

“China has always been committed to maintaining peace and stability in the Taiwan Strait,” he said, according to a readout by Beijing’s defense ministry.

“But ‘Taiwan independence’ and peace and stability in the Taiwan Strait are incompatible,” he said.

“China demands that the U.S. halts military collusion with Taiwan, ceases arming Taiwan, and stops spreading false narratives related to Taiwan,” Zhang added.

He also asked Washington to “work with China to promote communication and exchanges between the two militaries and jointly shoulder the responsibilities of major powers.”

‘Destabilizing actions’

Thursday’s talks also saw Sullivan express “concerns about (Chinese) support for Russia’s defense industrial base,” the readout added — echoing long-standing U.S. claims that Beijing has rejected.

He also raised “the need to avoid miscalculation and escalation in cyber space, and ongoing efforts to reach a cease-fire and hostage deal in Gaza,” the White House said.

On Wednesday, Sullivan and Wang discussed plans for their leaders to talk in the coming weeks — and clashed over China’s increasingly assertive approach in disputed maritime regions.

Sullivan “reaffirmed the United States’ commitment to defending its Indo-Pacific allies,” the White House said.

He also “expressed concern about (China’s) destabilizing actions against lawful Philippine maritime operations” in the disputed South China Sea, it said.

Chinese state media reported that Wang issued his own warning to Washington.

“The United States must not use bilateral treaties as an excuse to undermine China’s sovereignty and territorial integrity, nor should it support or condone the Philippines’ actions of infringement,” Wang told Sullivan, according to state broadcaster CCTV.

Wang and Sullivan previously met five times over the past year and a half — in Washington, Vienna, Malta and Bangkok, as well as alongside U.S. President Joe Biden and Xi in California last November.

During their latest encounter, they also discussed the tense issue of Taiwan, the self-ruled democratic island that China claims.

China has kept up its saber-rattling since the inauguration this year of President Lai Ching-te, whose party emphasizes Taiwan’s separate identity.
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