Rusal has filed a lawsuit against Rio Tinto demanding the return of its 20% stake in the Queensland Alumina refinery, which the Australian-British company passed on on unclear grounds to Rusal, which terminated its joint business with Rusal. The Russian company believes that Rio Tinto has breached its obligations and that the sanctions imposed by the Australian government are an insufficient basis for taking full control over production, because they did not concern Rusal directly and were imposed only on Viktor Vekselberg and Oleg Deripaska personally.