Participant Type: IndividualBased on the existing information, Hugh Leonard has been involved in 1 investor-State dispute.Witness 1 case in this roleBuried Hill Serdar Limited v. Turkmenistan, ICSID Case No. ARB/25/40 View case details1 source documentBuried Hill Serdar v. Turkmenistan, Decision on Disqualification, February 11, 2026