This episode's headline: War Zone Updates; Public Opinion on Wars; Pentagon's $9,609 Wrench. The guests include Sen. WILLIAM ROTH, Republican, Delaware; PAUL THAYER, Deputy Secretary of Defense;BURNS ROPER, Chairman, The Roper Organization. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor; Reports from NewsHour Correspondents: BRIAN BARRON (BBC), in Grenada; KEITH GRAVES (BBC), in Beirut; RUSS FROESE (CBC Journal), in Lebanon; LESTER M. CRYSTAL, Executive Producer