…provides that “a tribunal established under this section shall decide the issues in dispute in accordance with this agreement and applicable rules of international law.” Under these sources of law,…

…See ICSID, ICSID Caseload – Statistics, Issue 2013-2, 7 (2013), (reporting that, as of June 30, 2013, ICSID had registered 433 cases under the ICSID Convention and Additional Facility Rules)….