Arbitration analysis: An International Centre for Settlement of Investment Disputes (ICSID) tribunal chaired by Luca Radicati di Brozolo issued its final award on liability in respect of claims (‘Claims’) brought by US trusts and corporations and individuals of US nationality (‘Claimants’), collectively the shareholders in Industria Oklahoma Nicaragua SA (‘ION’), a Nicaraguan company, against the Republic of Nicaragua (‘Nicaragua’), finding in favour of Nicaragua. The Claims (valued up to US$198m) arose in connection with the termination by Nicaragua of a concession contract with ION dated April 23, 2004 (the ‘Concession’ or ‘Contract’) for oil exploration and exploitation in a block in Nicaragua’s onshore Pacific region (the ‘Concession Area’). The Claims, which cited breaches of the 2006 Dominican Republic Central America-United States Free Trade Agreement (‘CAFTA-DR’ or ‘Treaty’) and the ICSID Convention were dismissed by the tribunal. What is significant about this case is that in addition to contesting jurisdiction ratione materiae over the Claims and denying liability, Nicaragua also brought a counterclaim against the Claimants pursuant to Article 10 of the CAFTA-DR and Articles 25 and 46 of the ICSID Convention seeking compensation for damages caused by ION’s alleged breaches of applicable environmental obligations (the ‘Counterclaim’). The tribunal did not accept jurisdiction over the Counterclaim, because Nicaragua asserted no breach by the Claimants of environmental obligations incorporated in the Treaty. Written by Noor Kadhim, consultant at Gateley Legal.