By Patrick Schmidt.
In addition to current energy holdings in Syria, the Islamic State of the Iraq and the Levant (ISIL) holds seven different oil fields in Iraq.
This past month the militants seized Ain Zalah and Batma oil fields. They had previously gained control of Najma, Qayara, Himreen, Ajeel and Balad oil fields.
The total capacity of ISIL holdings in Iraq would amount to close to 80,000 barrels of oil per day. At current prices, that amount of oil would be worth $8.4 million.
It is believed that the militants are using their captured energy resources to fund their campaign of terror.
In the past week, a number of energy companies in the Kurdistan region have already taken steps to protect their staff after fears of additional facilities being overrun by the extremist group. The group orders local petroleum engineers and oil field workers to operate their captured facilities.