U.S. Sup. Ct.
12-13
An investment treaty (Treaty) between the United Kingdom and Argentina authorizes a party to submit a dispute “to the decision of the competent tribunal of the Contracting Party in whose territory the investment was made,” i.e., a local court, Art. 8(1); and permits arbitration, as relevant here, “where, after a period of eighteen months has elapsed from the moment when the dispute was submitted to [that] tribunal … , the said tribunal has not given its final decision,” Art. 8(2)(a)(i).