The post-war international order is under increasing strain. The principle that borders cannot be changed by force is being challenged –not only by Russia’s invasion of Ukraine, but by Donald Trump’s threats to seize Greenland, his undermining of longstanding alliances and his willingness to use military force abroad.

In his new book, Betrayal, Guardian foreign correspondent Luke Harding argues that today’s world resembles not a new Cold War, defined by ideological rivalry, but a return to ‘Great Power’ politics, driven by military strength and national self-interest.

On Monday September 7, Harding joins former Downing Street Director of Communications Alastair Campbell to examine how Trump and Putin are reshaping global politics. Drawing on Harding’s reporting from Ukraine and conversations with leaders including Volodymyr Zelensky, they’ll explore how an era defined by liberal democracy, international cooperation and the rule of law is giving way to one increasingly defined by power, coercion and nationalism.

Join two of the UK’s leading voices on politics and foreign affairs for an essential conversation on the forces reshaping the world –and what they mean for the future of democracy, security and the international order.