The former chief of the CIA’s Osama bin Laden unit says bin Laden’s “truce” offer comes from a long-established Muslim tradition of warfare -- sending a clear signal to the United States that an al Qaeda attack is more than likely. Twenty-two-year CIA veteran Michael Scheuer, who wrote “Imperial Hubris: Why the West Is Losing the War on Terror,” says bin Laden has offered his final warning before launching his next strike. “Warning your enemy before you attack him is very much a tradition in Islam from the prophet to the times when Saladin was fighting the Crusaders, he would...