WATCH: White House holds news briefing as Biden meets with leaders of Japan and Philippines

WASHINGTON (AP) — President Joe Biden said Thursday that U.S. defense commitment was “ironclad” as he gathered Philippine President Ferdinand Marcos Jr. and Japanese Prime Minister Fumio Kishida at the White House on Thursday in the midst of growing concern about provocative Chinese military action in the Indo-Pacific.

Watch the briefing the player above.

“The United States defense commitments to Japan and to the Philippines are ironclad. They’re ironclad,” Biden said as he began three-way talks at the White House with Kishida and Marcos. “As I said before, any attack on Philippine aircraft, vessels or armed forces in the South China Sea would invoke our mutual defense treaty.”

The White House summit was called amid growing concern about provocative Chinese action in the Pacific, which will be a large focus of the leaders’ talks. The White House sees the summit as countering China’s attempts at “intimidation” and sending a message that China is “the outlier in the neighborhood,” according to an administration official.