The market dynamics of sweet and sour crude

The market dynamics of sweet and sour crude: OPEC is under pressure fromcheap US “sweet” shale oil that is available in large quantities and easier to refine.The oil cartel, many of whose members produce “sour” oil that is harder to refine and is less available in the market, now has to decide whether to further extend their supply cuts and squeeze an already stressed market, Bloomberg tells us in this nice animated explainer (watch, runtime: 0:57).