While some experts fault demand increases for record-high oil prices, others say production and market issues reflect price hikes are more complicated.

Though shifts in demand and reduced production by some major producers have influenced oil prices, investor behavior is also increasing market volatility.

Political volatility among the world’s leading oil producers suggests deeper causes for recent price spikes.

Backgrounder: Economists say Iran’s mismanaged energy sector and falling oil prices could have consequences for its economy.