Perhaps like the Jewish-Catholic relationship as revised by the Church in the 1960s, where the calumnies were removed and the popes urged Catholics to see the Jews as elder brothers? Or like the Kosovars treat Israelis, perhaps?
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I'll have to give this more thought...but I don't see how you or I can impose such a revision of culture upon Arabs: admitting to the crimes they committed against Jews is too much for them. That's the lesson of the "peace process": the assumption was that if the Palestinians grossly transgressed the agreements their Arab brethren would push them back into line. Instead, when Arafat preferred to declare another
intifada rather than change the culture most Arabs and Muslims supported his terror and violence, rather than openly support the Israelis.