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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Democrat presidential hopeful Hillary Clinton begins her New Hampshire campaign but young and female voters are opting for Bernie Sanders.
Some southern counties have seen their windiest winds of the winter so far today.
A man in his 50s has been shot dead in Dublin, three days after a fatal shooting at a nearby hotel.