The White House said on Friday it regretted Russia's decision not to attend preparatory meeting last week for the 2016 nuclear security summit.

• November 4, 2014

The European Commission said on Monday it had pushed back a deadline for deciding whether to give Russia more access to the Opal gas pipeline across Germany until the end of January from the end of October.

• November 3, 2014

Ukraine's efforts to unblock deliveries of Russian gas as winter sets in were deadlocked on Thursday as Moscow's negotiators were quoted demanding firmer commitments from the European Union to cover Kiev's pre-payments for energy.

• October 30, 2014

Next month Asia-Pacific Economic Cooperation (APEC) summit in Beijing will agree to a deal to fight corruption, China's foreign minister said on Wednesday, appealing for more international cooperation.

• October 29, 2014

Ukraine and Russia begin new gas crisis talks on Wednesday, but wrangling over Ukraine's upfront cash payments threatens to push a deal out of reach, even as temperatures have fallen below zero in Kiev.

• October 29, 2014

Ukraine's prime minister warned on Thursday of possible attempts by Russia to disrupt an election in Ukraine at the weekend, a vote being held against a background of Russian support for separatist rebels and an unresolved row over gas.

• October 23, 2014

Russia and Ukraine aim to resolve an impasse over natural gas supplies as their energy ministers meet in Brussels for talks brokered by the European Union's energy commissioner.

• October 21, 2014

Russia and Ukraine made progress on Friday towards resolving a dispute over gas supplies in time for winter, but European leaders said Moscow still had to do much more to prop up a fragile ceasefire and end fighting in eastern Ukraine.

• October 17, 2014