Ian L. Campbell

His second book, The Massacre of Debre Libanos (AAU Press, 2014), reports the massacre of members of the Ethiopian Coptic Church in the monastery village of Debre Libanos in Italian East Africa between 21 and 29 May 1937.

[8] His third book is The Addis Ababa Massacre (Hurst, London & Oxford University Press, New York, 2017), an account of the atrocities following the attack on Rodolfo Graziani referred to as Yekatit 12.

[12][13][14][15] In 2022 Campbell published Holy War: The Untold Story of Catholic Italy's Crusade Against the Ethiopian Orthodox Church (Hurst).

[16] In the book Campbell uncovers the involvement of the Italian Catholic Church in facilitating Mussolini's invasion of Ethiopia, highlighting the complicity of key figures within the Vatican hierarchy, including Pope Pius XI, Secretary of State Eugenio Pacelli (who would later become Pius XII), and the archbishop of Milan Alfredo Ildefonso Schuster.

The work was named one of the best book of 2002 by the American 'Foreign Affairs'[17] and obtained wide acclaim from a range of global critics.