An oil war has begun between Saudi Arabia and Russia and its impacts are important for agriculture. Energy products are key inputs, affecting field work costs, fertilizer prices and ultimately marketing. The U.S. Energy Information Agency (EIA) had predicted an average oil price in 2020 of around $61/barrel; today, futures were down at one point to around half that level.  EIA’s Short-Term Energy Outlook for February, which it says, “reflects both the effects of the coronavirus and warmer-than-normal January temperatures across much of the northern hemisphere,” did not reflect a price war. It called for prices to rise this year and average $68/barrel in 2021. Markets are global and commodities are fungible but even...