Russia's energy minister on May 2 questioned Ukraine's ability to pay for Russian natural gas and said state-controlled OAO Gazprom will ask that deliveries scheduled in June be paid for upfront, which he said poses a risk of supply disruption to European customers. Ukraine owes more than $3.5 billion for Russian natural gas, said Energy Minister Alexander Novak after meeting his Ukrainian counterpart, Yuriy Prodan and European Union energy Commissioner Günther Oettinger.
Wall Street Journal: Russia warns of gas supply disruption to Europe
The state-controlled OAO Gazprom says deliveries scheduled in June should be paid by Ukraine for upfront.
