Tyrants on Twitter is the first detailed analysis of how Chinese and Russian agents weaponize Facebook, Instagram, Twitter, and YouTube to subvert the liberal international order. In addition to examining the 2016 US election, David L. Sloss explores Russia's use of foreign influence operations to threaten democracies in Europe, as well as China's use of social media and other digital tools to meddle in Western democracies and buttress autocratic rulers around the world.