Who is the "White Widow" terrorist?

      |Eye-witnesses have described one of the Kenya mall attackers as a Caucasian woman. Some think she could be the so-called "white widow," a British citizen whose husband was a suicide bomber in a 2005 London attack. Now, Interpol has issued an international arrest warrant for the woman. CBS News senior correspondent John Miller, a former assistant director with the FBI, discusses the woman and what officials know about her, her background, and her potential ties to the mall attack.