If you're looking for nonfiction with a literary sensibility and a historical bent, the books highlighted by the annual Pol Roger Duff Cooper Prize are a great place to start. British historian Susan Brigden, author of Thomas Wyatt: The Heart's Forest and one of the prize's judges, talks us through the 2024 shortlist — from war and revolution to the splendours of Mughal India and Monet's garden at Giverny.