Alienating trusted allies, engaging in Twitter diplomacy and facing new global threats, Donald Trump has not only altered the course of US foreign policy but also disrupted the world order. ABC news presenter John Barron joins political-science experts Aaron Connelly, Gorana Grgic and Robert E. Kelly to analyse the repercussions of Trump’s presidency for Australia and the world. Aaron Connelly is a Research Fellow in the East Asia Program at the Lowy Institute, Gorana Grgic is a politics and foreign policy lecturer at the US Studies Centre, and Robert E. Kelly is a political science professor at Pusan National University.