10:30 Sep. 9, 2016
CEO of Ukraine's state oil and gas company takes part in BBC's HARDtalk
Andriy Kobolev, the CEO of Ukraine's state-owned oil and gas company Naftogaz, says Russia's president, Vladmir Putin, is using gas as a weapon against Ukraine.
"Gas is a very powerful weapon and Mr Putin is a very dangerous, experienced and efficient opponent," Mr Kobolev told BBC's HARDtalk.
There is a protracted dispute around Russia's energy supply to Ukraine, which is also used as a transit route for natural gas exports to western Europe.
Kobolev said that President Putin had a "long-lasting and successful track record" of using gas as weapon against Ukraine and that the task of Naftogaz was "to try to resist in this war and to win this war".