G20 in a changing world: is it still useful? Four scholars weigh in

By Danny Bradlow, Professor/Senior Research Fellow, Centre for Advancement of Scholarship, University of Pretoria
Ana Saggioro Garcia, Professora Adjunta de Relações Internacionais, Universidade Federal Rural do Rio de Janeiro (UFFRJ)
Kennedy Mbeva, Research Associate, University of Cambridge
Sandy Africa, Director Research, MISTRA and Research Associate, Department of Political Sciences, University of Pretoria

US president Donald Trump’s address to the annual gathering of the United Nations general assembly in late September 2025 set a new low in international relations. Trump delivered a broadside attack on multilateralism – the effort to solve the world’s problems through collective endeavour – as well as issues that have found common cause among rich and poor countries alike, such as climate change.

So where does this leave the work of organisations…

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