the Saudis are intent on proving to the BANKERS who invest in Shale oil that they should read the small print - the oil buiness knows the price goes up and down like .. (fill in inapropriate pharse here)........
Next time round the cost of investment will be significantly higher, which the Saudis like - plus it stops/slows the spread of fraccing elsewhere
then it's one in the eye for the Iranians as well
the colateral damage to Mr Putin and people like Venezuala is pure icing
and of course it reminds the White House just who are the US's "oldest friends" in the region -especially as they'll follow through with some large orders for airliners, military hardware and infrastructure