Will they limit their oil production? Will the Western world agree on a Russian crude price cap? These are the questions of the week on the hydrocarbon front. Members of OPEC+, an alliance that includes OPEC members and 11 allied countries, including Russia, are due to meet on Sunday to respond to the first. The second question occupies the European countries and the United States which are negotiating a limited tariff for Urals, a mixture of Russian oils, as a sanction following the war in Ukraine.