The United States, Australia, India and Japan recommitted to working together on Tuesday, after the first meeting of the China-focused "Quad" grouping's top diplomats since President Donald Trump returned to the White House.

On his first full day as U.S. secretary of State, Marco Rubio is meeting with his counterparts from Australia, India and Japan. The four countries are known as the Quad.

Rubio called China the "most potent, dangerous adversary" during his confirmation and is expected to work with India, Japan, and Australia to counter this.

China's relations are starting to improve with Japan, India and other countries that former U.S. President Joe Biden courted, just as Donald Trump brings his more unilateralist approach back to the White House.

As Donald Trump returns, analysts say China will reshape its diplomatic landscape with nations that Joe Biden sought to court.

China's relations are starting to improvewith Japan, India and other countries that former U.S. President Joe Biden courted, just as Donald Trump brings his more unilateralist approach back to the White House.

Donald Trump’s criticism of China on the campaign trail and after his election had raised the specter that Day 1 of his second presidency would reignite a trade war between the world’s two largest economies.