KYIV, Dec 30 – Ukraine is facing a risk of losing $6 billion lawsuit to billionaire Ihor Kolomoyskiy in February 2021 in an arbitration over oil producer Ukrnafta in Stockholm, Justice Minister Denys Maliuska said Wednesday.

"The potential decision of the Arbitration Institute of the Stockholm Chamber of Commerce on the claim of the Cypriot offshore companies [owned by Kolomoisky, Boholiubov and Palytsia] – the owners of about 40% of Ukrnafta shares – against the state of Ukraine to recover about $6 billion [plus interest] deserves a special notice," Maliuska wrote on Facebook.