“Turkey fails to cut Islamic State oil revenue despite US pressure,” by David E. Sanger and Julie Hirschfeld Davis,Sydney Morning Herald, September 14, 2014 (thanks to Kenneth):
TweetMe PleaseWashington: The Obama administration is struggling to cut off the millions of dollars in oil revenue that has made the Islamic State one of the wealthiest terror groups in history, but, so far, has been unable to persuade Turkey, the NATO ally where much of the oil is traded on the black market, to crack down on an extensive sales network.