This episode's headline: Truce Fallout; Home to Hardship; Gergen & Shields; Preserving the Union. The guests include PAUL LEVENTHAL, Weapons Analyst; LT. GEN. WILLIAM ODOM, U.S. Army [Ret.]; BRUCE VAN VOORST, Time Magazine; FRANK GAFFNEY, Former Pentagon Official; DAVID GERGEN, U.S. News & World Report; MARK SHIELDS, Washington Post; CORRESPONDENTS: Fred De Sam Lazaro; Betty Ann Bowser. Byline: In New York: JAMES LEHRER; In Washington: JUDY WOODRUFF