On 12–14 June 2017, CIL Director Professor Lucy Reed and Research Assistant Seraphina Chew attended the inaugural Investor-State Mediator Training at World Bank Headquarters in Washington DC sponsored by the Bank’s International Centre for Investment Disputes (ICSID), the Centre for Effective Dispute Resolution (CEDR), the International Mediation Institute, and the International Energy Charter (ECT). This training initiative reflects the increasing interest in mediation and conciliation of investor-State disputes, either before or while the parties resort to international arbitration. Lucy and Seraphina presented the results of CIL’s survey on obstacles to settlement of investor-State disputes, as part of training the participants to identify the inherent impediments States face in voluntarily settling disputes with investors. Other speakers included Meg Kinnear, Secretary-General of ICSID; Karl Mackie, co-founder of CEDR; Anna-Joubin-Bret, a drafter of the IBA Rules on Rules for Investor-State Mediation; and Alejandro Carballo Leyda, General Counsel of the ECT.