Putin’s invasion of Ukraine is not necessarily going to be turned back by Treasury Secretary Janet Yellen’s clever idea to establish a reverse cartel in order to reduce Russia’s returns on sales of petroleum. China and India might end up receiving even steeper discounts than they now pay Russia for oil if Yellen’s maneuver manages to reduce what Europe, Africa, and the Americas proffer Putin for his fuel, but agreeing on low-balling Putin, and managing the process, presumably depends on how desperate Putin is to sell his oil at any price, and whether world markets can be manipulated artificially.