Canadian historian Susan Pedersen's The Guardians: The League of Nations and the Crisis of Empire (Oxford University Press) won the (USD) $75,000 Cundill Prize in Historical Literature (close to £50,000) earlier this week in Toronto.
The Cundill Prize, is the world's most lucrative international award for a non-fiction book and is administered by McGill University.
The Guardians is about the the first great experiment in internationalism, the attempt following the end of the First World War to administer the allied conquests under the new League of Nations.
Pedersen is professor of history at Columbia University in the US, and was one of three international finalists for this year's award, the others being Bettina Stangneth for Eichmann Before Jerusalem (Bodley Head) and Sven Beckert for Empire of Cotton (Alfred A Knopf).
Pedersen is agented by Aitken Alexander.