International tribunals and arbiters are often called upon to resolve substantial disputes over treaty interpretations. To establish the meaning in context, these judicial bodies may review <answer>the preparatory work from the negotiation and drafting of the treaty</answer> as well as the final, signed treaty itself.
In addition to the final, signed treaty what else might arbiters review to establish the meaning of a treaty in context?
the preparatory work from the negotiation and drafting of the treaty