CIA Says Iraq Drawing a Line on Attacking U.S. Tue Oct 8, 9:31 PM ET By Tabassum Zakaria WASHINGTON (Reuters) - The CIA said the probability of Iraqi President Saddam Hussein initiating an attack without provocation on the United States in the foreseeable future was "very low," according to a letter made public on Tuesday. But if he was attacked, the likelihood that Saddam would respond with biological or chemical weapons was "pretty high." The letter, dated Oct. 7, was signed by Deputy CIA Director John McLaughlin on behalf of CIA Director George Tenet and sent to Senate Intelligence Committee...