The head of Russian state-controlled energy company Gazprom warned the European Union there was "not insignificant" risk for Russian gas transit to the EU.
Ukraine's energy minister said Russia had cut off all gas supplies to Kiev this morning. Ukraine had until Monday morning to pay off a £1.1 billion gas debt or have their supplies cut off.
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Following the promise of further powers for Scotland, David Cameron is now talking about a new deal for the other home nations.
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Alex Salmond has announced his intention to end a 24-year career at the forefront of Scottish politics. Here is a brief look at his career.