This episode's headline: Tokyo Terror; Turkish Attack; Welfare Reform. The guests include MICHAEL SANGER, New York Times; MICHAEL MOODIE, Chemical Weapons Analyst; LARRY JOHNSON, Security Analyst; RICHARD LAMM, Former Governor, Colorado; MARSHALL KAPLAN, University of Colorado; PATRICIA WILLIAMS, Columbia Law School; TOM TANCREDO, Independence Institute; CORRESPONDENTS: NIK GOWING; BETTY ANN BOWSER; KWAME HOLMAN; ELIZABETH FARNSWORTH. Byline: In New York: ROBERT MAC NEIL; In Washington: JAMES LEHRER