Unmanned aerial vehicle MQ-9 Reaper on testing (C) Paul Ridgeway, US Air Force It is possible to argue whether there are fewer wars in the world, but it is difficult to argue that for a citizen of the First World, war has become a thing much more abstract than they were over most of human history.

Despite the fact that war is present in the lives of many people, the world as a whole, from a historical perspective, is fighting less and less. Psychologist Steven Pinker provides data illustrating the decline in the level of violence in the world over a long historical horizon. Human beings, both individually and collectively, according to Pinker, are increasingly using brute force less and less. The long post-war peace of the past 70 years is especially characteristic in this regard.

Harvard psychologist and author of many bestseller Stephen Pinker is a famous optimist. In his book The Better Angels of Oour Nature (2011) on 800 pages, he proves that the level of cruelty and the amount of violence in human society are reduced. In a recent article, Pinker argues about whether human nature requires to fight. Stephen Pinker (C) Max S. Gerber It looks like military conflicts are decline.

For wars, you have to pay more than it seems - both money and a temporary clouding of reason. The financial consequences are felt by the peaceful economy of the decade later. But the conflicts of recent times have to learn how to evaluate, Boris Grozovsky believes. War is a Keynesian paradise.

Philosopher Brian Orend from the University of Waterloo is the author of Morals of War, which is included in the list of mandatory reading dozens of training programs in military and civilian educational institutions. He adheres to that version of the theory of a fair war that appreciates the rights of people more than the interests of states. Orend told Inliberty how to wage war and most importantly, how to end it.