Leaders of Australia, India, Japan and the United States are taking new security steps in the Indian Ocean as outgoing U.S. President Joe Biden hosts counterparts from the Quad grouping established due to shared concerns about China.

"It will survive way beyond November," Mr. Biden declared of the Quad as the leaders gathered at the Archmere Academy, his high school alma mater.

Biden has met with the leaders of Japan, India and Australia privately at his Wilmington, Delaware home ahead of the secretive Quadrilateral Security Dialogue meeting this weekend.