We are starting to see the beginnings of deglobalization: Countries are increasingly at odds with each other. There is wider disparity among political parties. Trump is making what look to many people like unreasonable demands, both within the US and around the world. I believe that there is an underlying problem that most people are missing. A worldwide shortage of diesel and jet fuel is forcing international trade to begin moving into a new downward phase, relative to the recent share of GDP shown on Figure 1. Figure 1. Trade as a share of GDP,…