Alonso Gurmendi is an assistant professor at Universidad del Pacífico, in Lima, Peru, where he specializes in international humanitarian law and the international law on the use of force, with a focus on the history of international law.

He currently is a PhD candidate at University College London (UCL), where he is conducting research on the history of the principle of military necessity. His recent book, Conflicto Armado en el Perú: La Época del Terrorismo bajo el Derecho Internacional (Universidad del Pacífico Press), analyzes the application of international humanitarian law to the Peruvian fight against the Shining Path terrorist group in the 1980s and 1990s.

Professor Gurmendi previously was a member of the international litigation team in charge of defending the Republic of Peru in international fora, including the International Court of Justice, the World Bank's International Center for the Settlement of Investment Disputes (ICSID), and U.S. courts. He also is a member of the editorial board of the international law blog Opinio Juris.