"If I had to choose between betraying my country and betraying my friend, I hope I should have the guts to betray my country." So E. M. Forster famously observed in his Two Cheers for Democracy. Forster's epigrammatic manifesto, where the idea of the "friend" stands as a metaphor for dissident cross-cultural collaboration, holds the key, Leela Gandhi argues in Affective Communities, to the hitherto neglected history of western anti-imperialism...