Taiwan was high on the agenda as top diplomats from some of the world's major powers came together on Friday for the East Asia Summit in the Cambodian capital, Phnom Penh.
Tensions have been running high, as China kicked off massive military drills the day before. They followed a visit to Taipei by US House Speaker Nancy Pelosi.
The summit included the 10 members of the Association of Southeast Asian Nations. It was also attended by US Secretary of State Antony Blinken, and his counterparts Wang Yi from China, and Sergei Lavrov from Russia.
Blinken rebuked China for the drills that he called "provocative," and a "significant escalation." He said Beijing was taking dangerous acts to a new level.
Blinken said, "The fact is, the speaker's visit was peaceful. There is no justification for this extreme, disproportionate and escalatory military response."
Meanwhile, China's Wang left the room as Japanese Foreign Minister Hayashi Yoshimasa delivered a speech. Lavrov also left. The two held another meeting afterward.
Wang was curt in his response to a question from NHK. He said, "We firmly maintain the "one-China" principle and oppose Taiwan's pro-independence forces."
Beijing earlier canceled direct talks between Wang and Hayashi, planned for Thursday.
It said it was displeased with the joint statement by the Group of Seven nations, including Japan, criticizing the military exercises.