It is there that terrorists have the easiest access and the largest proportion of proven oil reserves, and low - cost production are also located there. (calcars.org)
Canada, with its tar sands deposits, has the third largest proven oil reserves in the world. (desmogblog.com)
Iran has the fourth largest proven oil reserves in the world, according to the US Energy Information Agency and any additional oil would add to the one million barrels a day of over-supply that has led to a more than 70 % collapse in oil prices since the middle of 2014. (nigeriapoliticsonline.com)