Backwardation is a market condition where spot prices exceed forward prices. Contango is the opposite condition, where forward prices exceed spot prices. The terms are most commonly used in oil markets but are also applied in certain commodities and energies markets. In oil markets, the prevailing condition may reflect immediate supply and demand. If crude oil is contango, it may indicate immediately available supply. Backwardation can indicate an immediate shortage. Anything that threatens the steady flow of oil around the world, such as imminent war, tends to drive the oil market into backwardation.