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Response to Review of The Internationalists and Their Plan to Outlaw War

We appreciate Professor Yearwood’s robust engagement with our book. While we disagree with the vast majority of his objections, which focus primarily on the empirical analyses we set out in chapters 13 and 14, we accept his critique on three points. 

First, we should have been clearer that the Republic of China already existed when Chiang Kai-shek proclaimed the island of Taiwan the Republic of China. Second, we should have added a parentheses identifying Zambia as the successor state to Northern Rhodesia. And, third, and most significant: Professor Yearwood is correct that the Correlates of War database on which we relied did not include the transfer of the Congo Free State to and from Belgium, and that led to incorrect data for the size of Belgium in 1816. We used a number of error-identification techniques (all of them described in the codebook for the dataset, which is posted in the data section on our website:, but unfortunately they did not identify this omission. We are grateful to Professor Yearwood for catching this mistake.

The appropriate adjustments and corrections will be made in the paperback edition. As for the remaining critiques, we encourage scholars to read the book and draw their own conclusions.