This episode's headline: Combat Zone; Cleaning Up?; Dole - Running Mates; Newsmaker; Pulitzer Winner. ANCHOR: JIM LEHRER; GUESTS: WILLIAM BROWN, Former State Department Official; EDWARD DJEREJIAN, Director, Baker Institute; DORIS KEARNS GOODWIN, Presidential Historian; MICHAEL BESCHLOSS, Presidential Historian; HAYNES JOHNSON, Journalist/Author; WILLIAM KRISTOL, The Weekly Standard; JACK MILES, Biographer; CORRESPONDENTS: ALEX THOMPSON; SPENCER MICHELS; MARGARET WARNER;