Editor's note

When peace efforts to end the war in Syria are put into geopolitical and historical context, commentators often dismiss the possibility, tending instead to see the rise of the Islamic State as another example of the so-called clash of civilisations that has ostensibly been a relentless force since the bloody history of Jihadis, Crusaders and inter-sect violence that began in the Middle Ages, argue Maximilian Lau and Emily Jarratt.

But the story of the 12th-century Jihadi Imad ad-din Zengi and Christian Roman Emperor John II Komnenos offers a different take – one that might shine a light on the path to peace.

Reema Rattan

Global Commissioning Editor

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Zoubeir Souissi/Reuters

Back for our future: lessons from the Crusades about peace in Syria today

Maximilian Lau, Hitotsubashi University; Emily Jarratt, King's College London

A case study from the height of the Crusades in the 12th and 13th centuries illustrates that even the most brutal leaders can choose to compromise for stability.

Politics + Society

Environment + Energy