Iraq 's biggest oil refinery at Baiji remained under government control on Thursday , Luaibi said , while the northern oil export pipeline from Kirkuk was already disrupted Cause.movement.down.loss due to insurgent attacks Civil.unrest before the latest escalation in violence Civil.unrest .

U.S. and European Union sanctions Embargo on Russia over the crisis Crisis in Ukraine have not yet disrupted Cause.movement.down.loss supply , but the IEA cautioned that the sanctions Embargo are expected to trim Cause.movement.down.loss Russian demand .

`` Recent advances by the Islamic State -LRB- IS -RRB- have disrupted Cause.movement.down.loss Middle East politics and shifted incentives for key regional and global players , '' Bank of America-Merrill Lynch analyst Francisco Blanch said this week , arguing that U.S. ally Saudi Arabia may be comfortable with lower Movement.down.loss prices .