Oil prices head for biggest weekly climb since April on supply halts
The International Energy Agency boosted its forecast for global demand growth as soaring natural gas prices and heat waves spur demand
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Prices have also benefited in recent days from a brief halt to supplies along a pipeline that carries crude from Russia to Europe
Oil headed for the biggest weekly gain in four months on interruptions to supply and speculation fuel switching will buoy demand.
Topics : Oil prcies natural gas Oil demand