Ever since members of the North Atlantic Treaty Organization sprang into action to help Ukraine try to thwart Russia’s invasion last year, China has warned about a similar U.S.-led security alliance forming in Asia that would seek to hobble Beijing’s ambitions and provoke a confrontation.

President Biden’s Camp David summit on Friday with the leaders of Japan and South Korea most likely reinforces Beijing’s perception. The talks saw Japan and South Korea put aside their historical animosities to forge a defense pact with the United States aimed at deterring Chinese and North Korean aggression.

Mr. Biden, who met with Prime Minister Fumio Kishida of Japan and President Yoon Suk Yeol of South Korea, sought to emphasize at a news conference that the summit was not “anti-China.” But Beijing will almost certainly find Mr. Biden’s assertion unpersuasive. China’s leader, Xi Jinping, has accused the United States of leading Western countries in the “all-around containment, encirclement and suppression of China.”