Russian lender Sberbank has been cleared to go after debts owed by subsidiaries of Turkish tanker owner Palmali Holding through the Maltese courts.
A Maltese judge has ruled that the case can be decided in domestic courts, despite ongoing arbitration in London.
The decision is another legal headache for Palmali owner Mubariz Mansimov, who is facing a trial in Turkey on allegations of aiding a terrorist organisation.