(from the article `aydar, Shaykh`) ...ideology with military activity—by conducting raids against the Christian Circassians of the north in 1483, 1487, and 1488. But his actions soon ... ...through his Byzantine wife, Despina, involved Uzun asan in attempts to shield Trebizond from the ineluctable Ottoman advance. The Ottomans ... ...
Found on http://www.britannica.com/eb/a-z/y/4
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