War is not inevitable
In 2010, the Bristish Pugwash Group published a statement in which three distinguished scientists argue that "War is not inevitable: aggressiveness can be tamed"
Read it here.
British Pugwash is the UK arm of the Pugwash Conferences on Science and World Affairs, an international network of scientists and others concerned about the social impact of science, with particular emphasis on abolishing weapons of mass destruction and war.
Their website is well worth a visit.