West Texas Intermediate (WTI)
Opec keeps a tight grip
The latest production quota cut by the Organisation of Petroleum Exporting Countries has forced prices up, but will crude oil producers in Europe and elsewhere co-operate to help them stay up? EricFishhaut examines the situation
Crude oil takes a double hit
Mark Powell of GlobalView Software looks at how crude prices are being affected by the impending war with Iraq and the general strike in Venezuela