Satellite imagery confirms a key East-West oil pipeline in Saudi Arabia has been severely damaged following a strike last week, which experts tell BBC Verify could reduce global oil supplies by as much as 3.6 million barrels per day (about 3.6% of global demand). Repair efforts are estimated to take over a month. The Saudi government has accused Iranian-backed militias in Iraq of the strike, which also saw Yemen's Houthi group attack Saudi Arabia's King Khalid Air Base. Brent crude was trading as high as $108 a barrel on Tuesday, after Saudi Arabia closed the pipeline as a precaution on Friday.