Leader Vladimir Putin played a key role in achieving the agreement of OPEC , said the head of Ministry Alexander Novak in the air of television channel " Russia 1 ". According to the Minister, in recent days, the head of the country many times contacted the American leader Donald trump and the king of Saudi Arabia Salman bin Abdul-Aziz al Saud to resolve the disagreement. "It was an ongoing dialogue in detail. Without the participation of the President, the deal could not take place ", - said Novak. yesterday, Putin, trump and Salman held a trilateral dialogues. During the conversation the leaders of the highly considered the agreement reached by OPEC . Later, the American leader said in a Twitter of gratitude to Putin and to Salman for his contribution at the end of the contract. <span style="color:darkgray