Half a billion of ISIS revenue is was from oil in 2015But with the US and Russia going after them and ISIS retaliating, ISIS will have a harder time this year... That whole area is at risk of going sideways, if it's not already there.
"The ISIS terror group made nearly $1 billion in total revenue last year, half of which came from the sale of oil"
https://www.ndtv.com/world-news/isis-made-1-billion-in-revenue-in-2015-us-treasury-1417718