Assassins hope to change the world, but rarely succeed: Baker concludes that the assassination of Franz Ferdinand in Sarajevo in June 1914 was the only one that changed the history of the world. Other assassinations, whether of monarchs, politicians, dissidents, clerics, journalists or others at best give only a glancing blow at history. The author concludes that, in Macbeth's words, an assassination 'is a poisoned chalice.' 

Kenneth Baker also reveals that since 1945 there have been fewer individual assassins working alone; now assassinations are more likely to be carried out by political and religious terrorists, or by the security services of certain states to eliminate dissidents. Not only Russia and Israel, but the USA, the UK and others have resorted to targeted killings when they consider their security is under threat. On Assassinations shows how we have moved from the era of individual assassinations, through to terror groups' murders and now onto state-sponsored targeted killings