In a trade speech at the Japanese embassy in Canberra, Treasurer Jim Chalmers has said the world was increasingly vulnerable and volatile due to the Russia-Ukraine and Israel-Hamas wars, as well as challenges in Chinese trade. What then are the implications of a new President in the White House for the existing and future global order? And what could Donald Trump's policies mean for Australia, a close US ally? Deborah Groarke speaks with Professor Dennis Altman from La Trobe University to find out.