Russian Deputy Energy Minister Anatoly Yanovsky said on Saturday that all agreements between world oil powers on freezing crude production are voluntary and that he couldn't imagine a mechanism for controlling the production freeze.

Yanovsky also said at an economic conference in Krasnoyarsk that Russia granting a loan to Iran did not depend on the talks on freezing production and that an anti-monopoly case in Europe against state gas giant Gazprom was politicized.

Full Story: http://www.reuters.com/article/us-opec-russia-idUSKCN0VT05N