An overview of the Fatah al-Islam terrorist group.

Two years after a tsunami devastated several Indian Ocean countries, a rudimentary warning system is in place. But coordination and funding concerns have slowed plans for a permanent regional system.

A profile of the Ogaden National Liberation Front (ONLF), a separatist group operating in eastern Ethiopia.

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