This episode's headline: Moment of Truth. The guests include NINA TOTENBERG, National Public Radio; SEN. ORRIN HATCH, [R] Utah; REP. LOUIS STOKES, [D] Ohio; REP. HENRY HYDE, [R] Illinois; REP. THOMAS FOLEY, [D] Washington; JOHN NIELDS, Iran-Contra Committee Counsel; ANDY MESSING, National Defense Council Foundation; FRED BARNES, New Republic; ANTHONY LEWIS, New York Times. Byline: In Washington: JAMES LEHRER; In New York: CHARLAYNE HUNTER- GAULT