This episode's headline: On the Road Again; Looking Ahead; Winds of Change. ANCHOR: JIM LEHRER; GUESTS: JEFF BARKER, Arizona Republic; CHARLIE CAIN, Detroit News; SHAUL BAKHASH, George Mason University; MOHAMMAD MAHALLATI, Former Iranian Diplomat; DANIEL PIPES, Middle East Quarterly; CORRESPONDENTS: TERENCE SMITH; BETTY ANN BOWSER; RAY SUAREZ; MARGARET WARNER; FRED DE SAM LAZARO; GWEN IFILL; TERENCE SMITH; KWAME HOLMAN; ROGER ROSENBLATT