The autonomous Kurdish region of Iraq voted for independence last week in a resounding – but non-binding – referendum. Baghdad has dismissed the vote. Turkey and Iran, with large Kurdish populations themselves, have threatened a blockade. Turkey’s threat to shut the Kirkuk-Ceyhan crude oil pipeline puts Kurdistan’s nearly 600,000 b/d of crude exports at risk. Ongoing tensions have already encouraged a temporary run-up in Brent prices, and will keep a small geopolitical premium on the price of crude.