The four strings will have an aggregate capacity of 63 billion cubic meters a year. 660 kilometers of the pipeline’s route will be laid within the old corridor of South Stream and 250 kilometers – within a new corridor towards the European part of Turkey.

Gazprom has put an expansion of its Nord Stream gas pipeline on hold, rowing back for the second time in two months on plans to extend its European network as relations between Russia and the West fester over Ukraine.

There is a process of an ever-increasing politicization which is sometimes also called a securitization.

Oil prices will stay lower for longer after more than halving since June, Goldman Sachs' (GS.N) chief commodity analyst said, arguing in his latest research note that demand growth in China and other emerging economies is set to slow.

OPEC’s secretary-general said oil prices as high as $200 a barrel are possible if producers fail to invest in new supply.

Russia's Gazprom plans to supply the first gas via a new route to Turkey in December 2016, Chief Executive Alexei Miller said in a statement on Tuesday.

As the world’s oil producers wring their hands over a global glut that’s pushing down prices, evidence is mounting that Saudi Arabia is more concerned about shrinking demand.

Saudi Arabia won’t balance global crude markets on its own even as prices fall “too low for everybody” and threaten the investment needed to meet long-term demand, the head of Saudi Arabian Oil Co. said.

Energy Transfer Partners LP (ETP) and Regency Energy Partners have agreed to merge in a unit-for-unit transaction, plus a one-time cash payment to Regency unit holders, valued at $18 billion, including the assumption of net debt and other liabilities of $6.8 billion.

Currency depreciation against the dollar affects oil importers and exporters differently

Total U.S. petroleum deliveries (a measure of demand) rose last month by 5.1 percent from December 2013 to average nearly 20.0 million barrels per day. For the fourth quarter, total domestic petroleum deliveries gained 2.9 percent compared to the same period in 2013.

The US drilling rig count fell 43 units to settle at 1,633 rigs working during the week ended Jan. 23, Baker Hughes Inc. reported.

Iran's oil minister is expressing hope that the OPEC oil cartel will begin cutting production in order to shore up plunging oil prices.

Warming ties between China and Russia are giving a big boost to Chinese imports of Russian oil, to the chagrin of OPEC nations jockeying for a slice of China’s market.

Russia is starting to see a wave of mass layoffs as a result of the plunging economy and needs to rethink where and how fast it spends its reserves, former finance minister Alexei Kudrin said.