Energy Sector

Iraqi army tanks get into position on the outskirts of the Baiji refinery during a joint operation between the army and popular mobilization units to retake the remaining area of the refinery from Islamic State (IS) militants, on May 24, 2015. (AHMAD AL-RUBAYE/AFP/Getty Images)

Baiji refinery devastated by IS scorched earth tactics

IS militants destroy critical control rooms and production units as pro-government forces battle to retake the remnants of Iraq's largest oil refinery.