that it was ISIS taking over some oil fields/refineries and selling for less
That is no rumor. I have read it and seen it reported repeatedly.
Part of the reason oil prices are plunging is the unrest in the middle east. The dictators there need money to pay troops and buy munitions, not to mention beefing up their Swiss bank accounts.
That incentivises them to sell more, for short term gains, because they do not know what the long term will mean.
Marktwain,
Have you got some links for this?
All I’ve heard is rumour and third hand stuff....