Ukrainian Prime Minister Arseny Yatseniuk blamed the breakdown of talks in a gas pricing dispute on Russia, saying Moscow had hoped to cause Kiev problems in winter.
"But it is not about gas. It is a general Russian plan to destroy Ukraine," Yatseniuk said.
Ukraine's energy minister said Russia had cut off all gas supplies to Kiev this morning after the two countries failed to reach an agreement on gas prices.
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Regional troops have secured the presidential palace in the Gambia's capital but there are fears the former leader has raided state coffers.
The police officer was shot in the arm at a petrol station on the Crumlin Road, but is in a stable condition.
Temperatures tumbling again tonight with a widespread sharp frost and lows of -5C or -6C and icy spots in places