Editor’s Note: Nafees Hamid is the research and policy director for King’s College London on the XCEPT research programme. He is a cognitive scientist who studies political violence. Follow his work on X @NafeesHamid, and @XCEPT_Research. The opinions expressed in this commentary are his own. See more opinion at CNN. CNN — As fighting continues between Israel and Hamas, many may wonder why this war — and, more broadly, the decades-long Israeli–Palestinian conflict — is so intractable. As far as the current war is concerned, third parties like the UN, US and Qatar have had only minor tactical successes such...