Russian gas giant Gazprom said its TurkStream pipeline project with Turkey would be delayed as tensions between Moscow and Ankara peak over Russia's intervention in the Syrian conflict.
Russian gas giant Gazprom said it had taken complete control of the company behind the abandoned South Stream pipeline project, buying shares belonging to France's EDF.
The head of the Ukraine's national energy company called on European officials to pressure Gazprom over the Russian energy giant's dealings with Slovakia.
The head of Russian state gas giant Gazprom escaped being named on a list of EU sanctions over the Ukraine crisis after lobbying from European energy firms, Moscow newspaper Vedomosti reported.
More than 30 people were killed in a "criminal" blaze in Ukraine's southern city of Odessa, as violence spread across the country during the bloodiest day since Kiev's Western-backed government took power.
Russia's energy giant Gazprom warned on Tuesday that new Western sanctions aimed at punishing the Kremlin for its perceived attempts to destabilise Ukraine could both hurt its stock price and leave Europe without crucial gas supplies.
Chairman of Russia's Gazprom Alexei Miller on Saturday said that Ukraine must pay back the full discount it has been granted on Russian gas over the past four years, worth $11.4 billion.
Russian energy giant Gazprom on Tuesday announced it was raising the price of gas exports to Ukraine by more than a third, scrapping a previous discount amid mounting strains between the two countries.
A British Greenpeace protester Tuesday said he was "jubilant" after Russia closed the criminal case against him for staging a protest on an oil rig, and vowed to keep fighting for environmental issues.
Russia's energy giant Gazprom said on Thursday it was giving up development of the Shtokman natural gas field under the arctic Barents Sea until new technology made the project viable.