China and Russia signed a $400 billion gas supply deal on Wednesday, securing the world's top energy user a major source of fuel and opening up a new market for Moscow as it risks losing European customers over the Ukraine crisis.

• May 23, 2014

Russian President Vladimir Putin hopes to sign a multi-billion dollar gas agreement with China during a two-day visit that kicks off on Tuesday, ending more than a decade of false starts and wrangling over a deal seen as vital to both sides.

• May 20, 2014

Russia's Gazprom assured European customers it would continue to supply their gas, after its threat to halts supplies to transit nation Ukraine next month over non-payment.

• May 17, 2014

Russia's Gazprom (GAZP.MM) demanded a $1.66 billion pre-payment from Ukraine for June gas deliveries on Tuesday, saying the neighboring country had only half its requirements in storage to ensure a trouble-free winter

• May 13, 2014

Russia will be ready to hold more talks with Ukraine on its natural gas supplies only when Kiev pays its gas debt to Moscow, Deputy Energy Minister Anatoly Yanovsky said on Monday.

• May 12, 2014

A gas price dispute with Russia must be resolved by June so Ukraine can guarantee stable flows to Europe and avoid a new gas war, Ukrainian Energy Minister Yuri Prodan said.

• May 7, 2014

There is no quick fix for Europe's energy dependence on Russia, Germany's Economic Affairs and Energy Minister said on Tuesday as G7 energy ministers readied a statement on the need to diversify energy supplies.

• May 6, 2014

Russian gas exports to Europe through Ukraine remained stable on Monday, a spokesman for state-controlled gas producer Gazprom said.

• May 5, 2014