This episode's headline: New Tape; The Terror Threat; After Saddam. ANCHOR: JIM LEHRER; GUESTS: RANDALL LARSEN; PATRICK McCRORY; ANTHONY WILLIAMS; MARY McCLYMONT; MAJ. GEN. WILLIAM NASH (RET.); RASHID KHALIDI; DR. MAHDI AL-BASSAM; CORRESPONDENTS: KWAME HOLMAN; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN