[jakobnev]

Let me give you a short behind-the-scenes version of the events: Assad plans to create an Iran-Iraq-Syria pipeline to supply oil to Europe. Saudi Arabia and Qatar feel that threatens their own pipeline so they fund the Islamic State to overthrow Assad.

But as IS grows and capures oilfields of their own they become less dependant of Saudi funding.

The Saudis fearing they will lose control of IS flood the market to diminish IS profits.