The Guardian’s editor-in-chief Katharine Viner looks back on the biggest news stories of 2025

It has been a year dominated by Donald Trump. It has not yet even been 12 full months since his return to the White House in January but already the changes he has wrought – in the US and around the world – would have seemed scarcely conceivable in 2024.

Katharine Viner, the Guardian’s editor-in-chief, tells Annie Kelly what it has looked like from the editor’s chair: from the deployment of the National Guard on American streets, to the humiliation of Volodymyr Zelenskyy in the Oval Office, to the erosion of the rules that once governed peace and war.