Book review: Underground Asia: global revolutionaries and the assault on empire by Tim Harper

In Underground Asia, Tim Harper explores the intensifying anti-colonial activity across South, Southeast and East Asia that sought to undermine empire ‘from below’ in the opening decades of the twentieth century. Weaving together an amazing array of sources into a memorable and exciting narrative and offering a fresh perspective on familiar events, this is a brilliantly realised work of history, finds Oliver Crawford.