This episode's headline: Widening War; Remembrance; Newsmaker. The guests include HARVEY MEYERHOFF, Chairman, Board of Directors; RAYE FARR, Director, Permanent Exhibition; SEN. GEORGE MITCHELL, Majority Leader; SEN. PAUL SARBANES, [D] Maryland; SEN. ROBERT DOLE, Minority Leader; CORRESPONDENTS: CHARLES KRAUSE; NIK GOWING. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER