"Stafford: How significant a role does oil play in funding
the Islamic State?
Bensh: I think we have to look at this from a much
broader angle. While ISIS is earning significant income
from oil sales, keeping in mind that no one really has a
true estimate of volumes, the more dangerous aspect of
this is that we are well beyond the point at which this is
a crazy group of jihadists running amok.
..."
http://www.worldpress.org/article.cfm/isis-turkey-oil-paris-attack-interview