Flags of member states of OPEC are seen in

Flags of member states of OPEC are seen in front of the Sheraton hotel in Oran, on December 14, 2008. There is now unanimous support within OPEC for a cut in crude oil output, OPEC president Chakib Khelil said Monday. But Khelil acknowledged that worldwide demand has weakened in the face of a global economic downturn. Oran hosts a key meeting of the oil cartel in Algeria on December 17.
Getty Images by AFP/Getty Images