> President Ronald Reagan watched the film several days before its screening, on November 5, 1983. He wrote in his diary that the film was "very effective and l

> President Ronald Reagan watched the film several days before its screening, on November 5, 1983. He wrote in his diary that the film was "very effective and left me greatly depressed," and that it changed his mind on the prevailing policy on a "nuclear war". The film was also screened for the Joint Chiefs of Staff. A government advisor who attended the screening, a friend of [the film's director Nicholas] Meyer's, told him "If you wanted to draw blood, you did it. Those guys sat there like they were turned to stone." Four years later, the Intermediate-Range Nuclear Forces Treaty was signed and in Reagan's memoirs he drew a direct line from the film to the signing. Reagan supposedly later sent Meyer a telegram after the summit, saying, "Don't think your movie didn't have any part of this, because it did." [0] [0] https://en.wikipedia.org/wiki/The_Day_After#Effects_on_policymakers https://en.wikipedia.org/wiki/The_Day_After#Effects_on_polic...