In the past week militants have swept across northern Iraq and were closing in on the capital Baghdad, sparking fears that OPEC's number two producer could be hit and sending oil prices to their highest levels of the year.
"Concerning as the latest events in Iraq may be, they might not for now, if the conflict does not spread further, put additional Iraqi oil supplies immediately at risk," the Paris-based International Energy Agency said on a cautionary note in its monthly oil market report.
However, the IEA, the energy monitoring and policy arm of the OECD group of advanced nations, pointed to the long-term importance of Iraq for the global energy market.
It calculated that "roughly 60 per cent of the growth in OPEC crude production capacity for the rest of this decade will come from Iraq."
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The 12-nation oil cartel, which supplies one third of the world's crude, earlier this week decided to hold their collective production target at 30 million barrels per day (bpd), where it has stood since late 2011, as they said the oil market was stable.
But oil prices rose to nine-month highs in Asian trading today as militants closed in on Iraq's capital Baghdad, with Brent North Sea crude gaining 28 cents to USD 113.30 per barrel after shooting up USD 3.07 in London trade yesterday.
US benchmark West Texas Intermediate advanced 47 cents to USD 107.00 in afternoon trade after surging USD 2.13 in New York yesterday to reach its highest level since September.
That put it behind Saudia Arabia at 9.75 mbd, and which has spare capacity estimated at 3.31 mbd which could be used to calm markets in case supplies are cut off elsewhere.
Overall OPEC supplies edged up to 29.99 mbd in May.