The OPEC/non-OPEC deal is working, and the present underlying key assumption of Russia’s financial insurance policies—oil costs at US$40—can permit it to reside perpetually at that worth or under, Russia’s Financial system Minister Maxim Oreshkin advised Bloomberg in an interview on the sidelines of the St. Petersburg Worldwide Financial Discussion board on Thursday. OPEC and Russia are already attaining what they meant to realize with the deal—a decline in crude oil stock ranges across the globe, the minister stated. Arguing that OPEC “has…