The Kaliningrad Regional Arbitration Court has ruled in favor of Rusal in its protracted legal battle with Rio Tinto, mandating that the Australian resources giant pay roughly $1.278 billion in damages. Alongside the financial penalty, the ruling permits enforcement actions against Rio Tinto’s 66 percent ownership interest in Oyu Tolgoi LLC, the entity behind Mongolia’s major copper-gold deposit. Judicial records also indicate that the court has processed a succession application filed by JSC Selena-M, signaling that Rusal may have formally transferred its litigation rights to the subsidiary.
The conflict traces back to operational disruptions at the Queensland Alumina Limited (QAL) facility in Australia, which processes around 3.7 million tonnes of alumina annually. Originally structured with Rio Tinto holding an 80 percent share and Rusal a 20 percent stake, the joint venture ceased toll-treatment services for Rusal following Australia’s implementation of sanctions against Moscow in 2022. The subsequent breakdown in commercial arrangements initiated years of cross-border arbitration and domestic litigation.
For global copper markets, the ruling introduces a layer of geopolitical and legal risk to one of the world’s largest undeveloped copper reserves. While enforcement mechanisms across jurisdictions remain complex, the potential encumbrance on Oyu Tolgoi’s equity underscores how trade restrictions and corporate disputes can indirectly impact supply visibility and capital allocation in strategic base metal projects.