Just 100 days in the White House has seen US President Donald Trump shake up global trade in a huge way.

The acknowledgement last week by the US that huge tariffs against China are ‘unsustainable’ was a significant de-escalation in the trade war between the world's two largest economies.

In this wide-ranging interview, Sean Aylmer talks to Professor Tim Harcourt from The Institute of Public Policy & Governance at UTS and host of The Airport Economist and Footynomics. They discuss the political reaction to tariffs, the fact that China used tariffs as a geopolitical tool before the US, and the opportunity presented by markets like India and Indonesia.