 Immediately after the films original broadcast, it was followed by  a special news program, featuring a live discussion between  scientist Dr. Carl Sagan (who opposed the use of nuclear weapons)  and Conservative writer William F. Buckley Jr. (who promoted the  concept of "nuclear deterrence"). It was during this heated  discussion, aired live on network television, where Dr. Sagan  introduced the world to the concept of "nuclear winter" and made his  famous analogy, equating the nuclear arms race with "two men  standing waist deep in gasoline; one with three matches, the other  with five".