"You will be escorted to the Klingon border by the Enterprise tomorrow morning at 0800."

Yet you said this happened near the Klingon border.

"Just promise me you won't answer any mysterious distress calls from the other side of the Klingon border."

"If we come at them from the direction of the Klingon border, their best hope of evasive action is to break back toward our side."

"Set course for the Klingon border and engage at warp nine when we're clear of the station."

It's been a hobby of mine ever since I was a boy living on the Klingon border.

"We're past the Klingon border now, and no sign of trouble."

Along with the new exploration push, there've also been reports of increased activity along the Klingon border.

The planet was selected for its proximity to the Klingon border.

It was well placed when originally constructed, just a parsec from the Klingon border.