A good, thought-provoking read. MacMillan draws several significant, unsettling parallels between modern times and the era immediately before World War I. Additionally, these factors don't exist in isolation: just like the early 1900s, several of these factors are coming together at the same time, and will certainly rebound off each other. No two periods in history are exact matches for one another, and there are probably as many differences between now and the pre-WWI era as there are similarities. However, the trends MacMillan focuses on should probably not be ignored.