In US trading on Tuesday, oil struck a record intra-day high of 88.20 dollars before dropping back to settle above 87 dollars for the first time, at 87.
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61 dollars a barrel.
On Monday it jumped more than two dollars.
The price of Brent North Sea crude was not immediately available.
In London trade on Tuesday, Brent for November delivery advanced 1.41 dollars to settle at 84.16 dollars, after earlier hitting an all-time high of 84.49 during the session.
Oil prices surged as investors fixated on Turkey, where the parliament is expected to adopt a government motion on Wednesday to allow cross-border operations against bases of the Kurdistan Workers Party (PKK) in Iraq.
The White House has urged Turkey to refrain from any unilateral action that could further destabilise Iraq, while Iraq's deputy prime minister warned of "grave co