Definition: You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.
Input: The countries could not come to agreement on a treaty, so they settled on mediation of the conflict, since the _ was a treacherous negotiation.

treaty