KIEV, April 11 – Mutual claims of Naftogaz Ukrayiny and Russia's Gazprom under a gas sale and purchase contract total some $17.9 billion and $45.7 billion ($14 billion and $36.7 billion ex interest), respectively.

Financial claims of Naftogaz under the contract include compensation of the overpaid sum for gas ($17.9 billion), while Gazprom's claims – unpaid bills for November 2013 through May 2014 ($2.9 billion) and payment for gas under the take or pay provision ($42.8 billion).