Russian President Vladimir Putin (9th from right), Venezuelan President Nicolas Maduro (8th right), Bolivian President Evo Morales (7th right) and Iranian President Mahmoud Ahmadinejad (10th right) pose for a family photo with participants of the Gas Exporting Countries' Forum at the Kremlin in Moscow yesterday. Putin called on gas exporting countries to agree on a single pricing mechanism and resist European Union market rules as he hosted the forum.