“Mr. President, we must not allow a mine-shaft gap!”
IMHO, best line of the whole movie.
That was quite an amazing movie. For example, Kubrick’s set design for the nuclear command system on a B-52 was so close to the real thing that it touched off a SAC security investigation. As Kubrick explained though, he had simply taken the requirements as stated in Herman Kahn’s writings on nuclear warfare and used them as the basis for the coded radio command link system that controlled the release of nuclear bombs on the B-52.
I also liked the President’s shouting, “Gentlemen, you cannot fight in here ! This is the War Room !” (responding to the fight between the Russian Ambassador and General “Buck” Turgidson)