A youth works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. The refinery site, owned by Yousef Ayoub, 34, has been active for 4 months. Ayoub says that he gets the crude oil from Islamic State-controlled areas in Deir al-Zor province and Iraq. The price for a barrel of crude oil varies and is controlled by the Islamic State, but it is currently at $44 dollars per barrel, he said. (Photo by Khalil Ashawi/Reuters)





Yousef Ayoub (L), 34, works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





A youth works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Men work at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Yousef Ayoub, 34, works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





A worker inspects the final fuel product at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Men work at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Yousef Ayoub, 34, uncovers a container for the final fuel product at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





A worker shows off the final fuel product at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





The final fuel product is pictured at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Yousef Ayoub, 34, works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





Yousef Ayoub (L), 34, works at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)





The final fuel product is pictured at a makeshift oil refinery site in Marchmarin town, southern countryside of Idlib, Syria December 16, 2015. (Photo by Khalil Ashawi/Reuters)