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

With oil supplies tight, regions most vulnerable to oil supply disruptions present a significant economic concern, particularly threats to the Strait of Hormuz and unrest in Nigeria, explains this Ba…

U.S. missile defense in the twenty-first century is focused on emerging threats from North Korea and Iran, but critics say these systems are too costly and largely unproven.