First floated by U.S. Treasury Secretary Janet Yellen, the idea of capping Russian crude oil exports had a dual aim: keeping Russian oil flowing abroad, which would set a ceiling on prices, and at the same time reducing Russia’s oil revenues, which make up a sizeable portion of GDP and, according to G7, are what Russia is using to finance the war in Ukraine. https://oilprice.com/Energy/Crude-Oil/Why-The-Russian-Oil-Price-Cap-Wont-Work.html Why The Russian Oil Price Cap Won’t Work