Mr. President, we must not allow a mine shaft gap!

— General Buck Turgidson (George C. Scott)

6 seconds sound clip from the Dr. Strangelove movie soundboard.

You can hear this line at 01:32:42 in the Blu-ray version of the movie.

Quote context

[...]

- Supposing the Russkies stashed away some big bombs, see, and we didn't. When they come out in a hundred years, they could take over.

- I agree, Mr. President.

- In fact, they might try an immediate sneak attack so they could take over our mine shaft space.

- Yeah. I think it would be extremely naive of us, Mr. President, to imagine that these new developments are going to cause any change in Soviet expansionist policy.

- I mean, we must be increasingly on the alert to prevent them from taking over other mine shaft space in order to breed more prodigiously than we do, thus knocking us out through superior numbers when we emerge.

- Mr. President, we must not allow a mine shaft gap!

- Sir, I have a plan.

- Mein Fuhrer, I can walk!

- We'll meet again. Don't know where, don't know when. But I know we'll meet again some sunny day.

- Keep smiling through just like you always do till the blue skies drive the dark clouds far away.

[...]