Global Oil Industry - Nasty Price Wars

Some oil-producing nations will face severe pain in the near future:

http://www.telegraph.co.uk/finance/oilprices/11945503/Oil-price-crunch-could-leave-Middle-Easts-export-giants-out-of-cash-within-five-years-warns-IMF.html

OPEC/Saudi Arabia vs. the US

http://www.bloomberg.com/news/articles/2015-10-20/after-year-of-pain-opec-close-to-halting-u-s-oil-in-its-tracks