When US President Donald Trump meets with China's President Xi Jinping this week, it will be a geopolitical heavyweight match-up with enormous stakes, according to Joe Biden’s former deputy secretary of state, Kurt Campbell.

On the table is everything from global trade to security.

And, at a time when Trump is arguably at his weakest, and Xi at his most paranoid.

Today international and political editor Peter Hartcher on whether Trump may inadvertently lead the United States into unilateral concessions and unintentional appeasement, and what this might mean for the rest of us.