President Joe Biden is convening the leaders of Australia, India and Japan for a Quad summit in his hometown of Wilmington, Delaware, this weekend, aiming to put a final stamp on an alliance he hopes will endure beyond his presidency.

US President Joe Biden hosted Australia's prime minister at his Delaware home Friday, at the start of a weekend summit with the so-called "Quad" group he has pushed as a counterweight to China.After a one-on-one meeting at his property with Australia's Anthony Albanese on Friday night,

At their upcoming summit in Delaware, the leaders of the four Quad countries have an opportunity to build on long-running efforts to transform the grouping into one that is more sustainable,