This episode's headline: Code of Conduct; Yeltsin's Problems; Conversation - War Story; Prairie Genius. The guests include BETTY ROBERTS, Former Oregon Judge; NORMAN ORNSTEIN, American Enterprise Institute; JEAN DUGAN, Senate Staff Member; KEMAL KURSPAHIC, Bosnian Journalist; GORDANA KNEZEVIC, Bosnian Journalist; CORRESPONDENTS: SIMON MARKS; ELIZABETH FARNSWORTH. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER;GUESTS: BETTY ROBERTS, Former Oregon Judge; NORMAN ORNSTEIN, American Enterprise Institute; JEAN DUGAN, Senate Staff Member; KEMAL KURSPAHIC, Bosnian Journalist; GORDANA KNEZEVIC, Bosnian Journalist; CORRESPONDENTS: SIMON MARKS; ELIZABETH FARNSWORTH