This episode's headline: Soviet Embassy; Kemp for President; Generating Debate; Sermon on the Mound. The guests include In New York: HENRY KISSINGER, Former Secretary of State; In Washington: JACK KEMP, Presidential Candidate; REPORTS FROM NEWSHOUR CORRESPONDENTS: MARILYN DEUTSCH, Oregon Public Broadcasting; ROGER MUDD. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor