Crude oil prices are at a four-year high and on a trend toward five straight quarters of increases – the longest bull market in more than 10 years. As is often the case with the oil markets, geo-politics is a driving force. U.S. sanctions on Iran are set to go into effect on 4 November, and resulting supply controls by OPEC and Russia are propping up prices. OPEC is especially enjoying the bull ride. Last year net oil export revenues were about $567 billion, up 20 percent from 2016. The U.S. Energy Information Administration (EIA) is projecting they will grow another 30 percent this year to $736 billion, according to its August forecasts. The difference between past periods of OPEC production control, supply interruptions and market...