1164 Battle of Harim: Nur ad-Din Zangi defeats the Crusader armies of the County of Tripoli and the Principality of Antioch.
1187 The Crusades: attle of Hattin
1227 Frederick II, Holy Roman Emperor, is excommunicated by Pope Gregory IX for his failure to participate in the Crusades.
1998 Osama bin Laden publishes a fatwa declaring jihad against all Jews and "Crusaders"; the latter term is commonly interpreted to refer to the people of Europe and the United States.