Islamic Spain: History's refrain It's a model for interfaith ties, and a warning about religious division. By Alexander Kronemer Washington The past sometimes provides examples of glory and success that serve as models. Other times, as the philosopher George Santayana said, it warns of impending calamity for those who do not learn from it. For the past several years, I've been immersed in a history that does both. As one of the producers for an upcoming PBS documentary on the rise and fall of Islamic Spain, I've witnessed its amazing ascent and tragic fall countless times in the editing...