Chimamanda Ngozi Adichie: 'Don't we all write about love? When men do it, it's a political comment. When women do it, it's just a love story'

Chimamanda Ngozi Adichie's third novel, Americanah is the story of two Nigerian émigrés who love and lose each other across continents and years. It is a book about leaving, and loneliness and the intersection between class and race, all of which makes it sound rather hard work – unjustly so. It is …