You now have seven minutes left
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This is the captain of the Enterprise speaking.
It is the custom of Earth people
to try and avoid
misunderstanding whenever possible.
We destroyed your space buoy
as a simple act of self-preservation.
When we attempted to move away from it,
it emitted radiation harmful to our species.
If you've examined our ship
and its tapes,
you know this to be true--
loud humming :
You now have seven minutes left.

Kirk tries to reason with Balok.