John waited for the king to speak first, as protocol demanded.

But whatever the real reason, social protocol demanded some explanation.

"Protocol demands that you not refer to me by my first name."

He entered first, as protocol demanded, forcing himself to walk not run.

He held her hand a moment longer than protocol demanded, and she met his gaze calmly.

Mason was sick of asking this question, but protocol demanded it.

As protocol demanded, he stopped just past the edge of the carpet; his head turned from one Roman to the other.

The Speaker, trying to invite him in, as protocol demanded, could not make himself heard, so the poor man kept on knocking.

Protocol demands that it not be called to the vote until reasonable discussion is held.

Vic does not welcome this proposal, but protocol demands a positive response.