Ukraine has not been importing natural gas under a contract with PJSC Gazprom (Russia) already for seven years – since November 26, 2015, purchasing it exclusively on the western border of the country.

The reason for Ukraine's refusal to buy gas on its eastern border at the end of 2015 was the inconsistency in price.

At the same time, after the revision of the formula in the contract between Naftogaz and Gazprom under the Stockholm Arbitration, Ukraine was ready to resume direct imports in the spring of 2018, but the Russian monopolist returned the advance payment to Naftogaz.