A “hot mic” incident, in which Biden told the other leaders that Beijing was “aggressive” and “testing us,” underscored the real thrust of the anti-China summit.

Prime Minister Narendra Modi will be in the US from September 21-23 to attend the fourth Quad Leaders’ Summit. The Prime Minister will also address an event at the United Nations General Assembly in New York.

"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.