The Eurasian Economic Union, according to the former head of the KazMunaiGas Lyazzat Kiinov, will have a positive effect on the situation with petrol in Kazakhstan.
The head of the Ukraine's national energy company called on European officials to pressure Gazprom over the Russian energy giant's dealings with Slovakia.
The European Union's incoming foreign affairs head Federica Mogherini said that the Russian "bear" needed to be handled with a mixture of firmness and tact.
Ukraine said it had struck a gas deliveries deal with Norway's energy giant Statoil aimed at helping it avert the consequences of a cut in Russian supplies.
President of Kazakhstan said that traditional energy was not possible to replace with alternative sources, which is why Kazakhstan should not be afraid of that its economy is based on raw materials.