< br>US Treasury Secretary Janet Yellen. File photoMOSCOW, May 20.The G7 countries are discussing the creation of a special cartel, the purpose of which will be to set a price threshold for Russian oil, Bloomberg reports with reference to US Treasury Secretary Janet Yellen. As the agency notes, the formation of a cartel of buyers to ensure a set price for Russian oil could minimize Moscow's income.< p>"Many, including myself, consider this option attractive from an economic point of view, but in fact, launching such a mechanism is a difficult task, all these issues have not been worked out yet", Yellen told reporters in Bonn.< /p>The agency's sources report that EU leaders, who will meet in Brussels at the end of May to discuss the situation in Ukraine, will also support limiting the price of oil from Russia. Another source stated that the price cap plan is far from being realized.