Australians must be braced for uncertainty, an academic warns, as Donald Trump becomes the leader of the free world for a second time.

During his first term, Trump quickly struck up a relationship with Chinese President Xi Jinping. Both men lavishly hosted each other in Florida and Beijing. But that did not stop

U.S. President Donald Trump's picks for senior posts in his administration include several people with deep ties to China, but several have divergent views on how to deal with Washington's biggest rival,

On his first full day as secretary of state, Marco Rubio is meeting with his counterparts from a group of countries known as the Quad: the United States plus India, Japan and Australia, representing nearly 2 billion people and more than a third of global GDP.

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.

US Secretary of State Marco Rubio on his first full day in office Tuesday warned jointly with Japan, India and Australia against coercive actions in Asia, in a veiled but