WASHINGTON - Barack Obama, sights set on party unity going into the Democratic national convention this month, is striking back hard against a best-selling book that portrays the presidential candidate as dangerous and radical, branding its author a "discredited liar" intent on advancing a Republican agenda.
Jerome Corsi's book, "The Obama Nation: Leftist Politics and the Cult of Personality," brings together in one volume the innuendo and false rumors that Obama