Admiral Lisa Franchetti, U.S. Navy Chief of Operations, told a media briefing during a visit to Seoul that it was vital to maintain open lines of communications between the two militaries to avoid "misunderstandings and miscalculations" that could lead to conflict.

"I'm very excited and I welcome that announcement," she said of China's agreement to resume telephone communications between theatre commands, something U.S. officials have been eager to develop.

"These agreements were reached just recently, and we know that we have work with the PRC mil to do to solidify the next steps," Franchetti said.

Her remarks come after agreements this month by U.S. President Joe Biden and China's Xi Jinping to resume military contacts that Beijing froze after then-House of Representatives Speaker Nancy Pelosi visited Taiwan in August 2022.

The need for improved military communications was part of four hours of discussions when the two leaders meet in San Francisco last week, talks that covered tensions over Taiwan, Iran and co-operation over reducing the flow to the opioid fentanyl to the United States.

(Reporting by Greg Torode; Writing by Liz Lee; Editing by Jamie Freed and Gerry Doyle)

By Greg Torode