This is against all diplomatic protocols as I understand them.
The official spoke on condition of anonymity, citing diplomatic protocol.
The official asked not to be identified, citing diplomatic protocol.
Ms. Rice's action was a departure from diplomatic protocol on several levels.
The mission staff is hard pressed to attend social events, a sacred part of diplomatic protocol.
This statement, coming from the French head of state, was considered a serious breach of diplomatic protocol.
It was, for a Tarn, a major concession to diplomatic protocol.
The diplomatic protocol of it was all rather interesting.
I welcome his call to allow judicial authorities to speak to each other without diplomatic protocol.
He declined to discuss the case further, citing diplomatic protocol.