Ukraine crisis

Kiev administration launches "anti-terrorist operation" in eastern Ukrainian cities as helicopters and infantry vehicles are reportedly deployed.

Ukrainian forces and armed men exchange gunfire in Kramatorsk as pro-Russian protesters seize buildings.

IEA lowers 2014 outlook for Russia oil demand to 3.5 million barrels a day.

Gold prices rose 1.2% this week after gaining 0.7% in the week of 5 April.

US widens sanctions against Russia over Ukraine crisis blacklisting six Crimean officials and a gas company.

Nigel Wilson asks if Vladimir Putin's threat to Ukraine is yet more sabre-rattling or a genuine warning

Vladimir Putin says Gazprom will honour gas contracts with European clients.

Ukraine Energy Minister Yuri Prodan says he's working to secure energy supplies from European countries

Moscow warns Russians not to travel to countries that have extradition treaties with US

United States condemns Russian threats to cut off Ukraine gas supplies over unpaid bills.

BP chief exec Bob Dudley told shareholders the company can heal the broken relationship with Moscow

Russian gas has been at the heart of the Ukraine crisis since the earliest days of protests in Kiev.

Russian President Vladimir Putin told Gazprom to relax its demands for up front gas payments from Kiev

Ukraine's SBU detains Russian spy Maria Koleda accused of working for Kremlin to destabilise southern Ukraine

Ukraine crisis highlights energy security concerns in Europe, which relies on Russian gas supplies.

Growth, not Ukraine crisis, to take centre stage at the G20 meeting that begins on 11 April.

Lingering tension over the Ukraine crisis and uncertainty over Libyan ports keeps Brent futures high

Lack of government funding is jeopardising safety of zoo animals across Ukraine

Brent May contract up 0.43% to $106.39 a barrel at 10:45 BST.

Pro-Russian activists in eastern Ukraine have proclaimed independence.

Brent crude shed 1.3% for week as a whole as Libya uncertainty impacts prices.

Price-sensitive physical buyers again back in bullion market.

Ukraine's interim Prime Minister says the government is in talks to import natural gas from Europe

Also known as Dmitry Firtash, the oligarch was arrested and ordered to pay €125m in bail

Ukraine's Energy Minister Yuri Prodan said Gazprom was playing politics after hiking prices twice in a week.

The diplomatic row between the US and Russia threatens to wreck Miley Cyrus's plans to play at Helsinki's Hartwall Arena.

Group DF's deputy chairman says "this is an abuse of the Austrian justice system"

JPM blocks Russian remittance to Sogaz Insurance Group.

Ukraine faces 44% gas bill rise, bringing it in line with other European customers

Tax breaks and infrastructure improvements planned to make Crimea pay its own way