This general rule of treaty interpretation highlights three sources in which practitioners may seek the meaning of a treaty: the treaty’s terms, the context of those terms, and the treaty’s object and purpose.68 The Vienna Convention defines context to include “any agreement relating to the treaty which was made between all the parties in connection with the conclusion of the treaty” as well as “any instrument . . . made by one or more parties . . . and accepted by the other parties.”69 Practitioners must also take into account, in addition to the context, relevant subsequent agreements between the parties, relevant subsequent practice of the parties, and any relevant rules of international law