An authoritative, incisive explanation of the causes and current status of hostilities around the world. The world today rests on increasingly unstable fault lines. From the conflict in Ukraine or fresh upheavals in the Middle East to the threats posed to humanity by a global pandemic, climate change, and natural disasters, the world's danger zones once again draw their battle lines across our hyper-connected, yet fragmented, globe. In this revised and updated fourth edition, join veteran Economist journalist John Andrews as he analyzes the old enmities and looming collisions that underlie conflict in the twenty-first century. Region by region, discover the causes, contexts, participants, and likely outcomes of every globally significant struggle now underway. From drug cartels to cyber war, this is the indispensable guide for anyone who wants to understand our perilous world.