Uncertainty over U.S. waivers for buyers of Iranian oil is starting to grip the market again, under very different circumstances than when American sanctions were set to go into effect last year. Before existing exemptions were granted in early November, Saudi Arabia was pumping at record levels, benchmark Brent futures rose to a four-year high, traders were predicting $100 oil, and Donald Trump was seeking lower fuel prices ahead of U.S. mid-term elections. The waivers blindsided the market, which had assumed America would bring Iranian exports to zero, and sparked a 40 percent collapse in crude. Now, as the ... (full story)