Donald Trump, on Thursday called on the Opec, the Organization of the petroleum exporting countries, to increase its production. A new call from the foot of the american president at the cartel that pushed back the price of crude oil. "Very important that Opec increases the flow of Oil. The global markets are fragile, the price of oil become too high. Thank you!", tweeted the american president.

crude prices have sharply declined after this message, the american president, before deciding to limit their losses a few minutes later. Around 13: 00 GMT, the barrel of "light sweet crude" (WTI) for maturity in may gave up 88 cents at 58,53 dollars on the New York Mercantile Exchange (Nymex).

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The calls of the foot of Trump to Opec, more or less cordial, according to the times, occur quite frequently. The last date was in February, when the occupant of the White House had declared: "the world can't redeem a rise of the price" and had called on the cartel to keep her "quiet".

The Opec and its partners, including Russia, are engaged in an agreement for the reduction of their production in order to maintain high prices on world markets. Since January, the price of crude quoted in New York jumped by 28.6 percent and that of oil listed in London took up 23.9%.