What the rise and fall of past global dictators says about foreign affairs today

President Trump has praised dictators and autocrats such as Kim Jong Un and Vladimir Putin. As China's Xi Jinping and Trump respond to weeks of Hong Kong protests against mainland China, and as Russia responds to a nuclear accident amidst a new arms race, how much of the globe's future depends on the whims of strongmen? Foreign Affairs magazine is devoting an entire issue to dictators around the world.