Ukraine may submit new gas questions to Gazprom

The supervisory board of NJSC Naftogaz Ukraine will consider the possibility of filing new lawsuits against Russia's Gazprom for the total amount of $17.3 billion, Naftogaz Executive Director Yuriy Vitrenko said.

"My team clearly formulated additional "questions" to Gazprom for the amount of $17.3 billion and submitted them for approval to the Naftogaz supervisory board," he wrote on his Facebook page.

"If agreed, there is also a lot of work ahead," Vitrenko added.