Russia has received an official refusal from the U.S. government to provide guarantees for Ukraine's liabilities, Russian news agencies reported on Saturday, citing Russia's Finance Ministry.

• December 5, 2015

Concerned about its assertive neighbor Russia, Estonia plans to upload much of its government data to computing clouds to guard against security threats, enabling the Baltic state to be run from abroad if necessary.

• December 4, 2015

Britain joined U.S.-led air strikes against Islamic State in Syria on Thursday, but Vladimir Putin issued bitter new denunciations of Turkey for shooting down a Russian plane, demonstrating the limits to international solidarity.

• December 4, 2015

Britain joined U.S.-led air strikes against Islamic State in Syria on Thursday, but Vladimir Putin issued bitter new denunciations of Turkey for shooting down a Russian plane, demonstrating the limits to international solidarity.

• December 3, 2015

Oil-producing countries looked unlikely to reach a deal to lift languishing prices at a meeting on Friday after Iran, Iraq and Russia swiftly rejected a surprise proposal that appeared to have been floated by Saudi Arabia.

• December 3, 2015

Ukrainian billionaire Dmytro Firtash said the Ukrainian government is politically bankrupt and will probably fall early next year, his most outspoken criticism of the pro-Western leadership in Kiev since it came to power almost two years ago.

• December 2, 2015

Turkey wants to cut its reliance on Russian gas used in cars and households, prompted by a growing chill in ties between Ankara and Moscow after the downing of a Russian jet.

• December 2, 2015

Russia's defense ministry said on Wednesday it had proof that Turkish President Tayyip Erdogan and his family were benefiting from the illegal smuggling of oil from Islamic State-held territory in Syria and Iraq.

• December 2, 2015