books.google.com - "Robert Axelrod's extraordinary book, The Evolution of Cooperation was globally acclaimed for the rich results of its simple model. The Complexity of Cooperation now gathers together the myriad fruits of more than a decade's work, carefully 'complexifying' his initial model. Like his ideas, his prose...https://books.google.com/books/about/The_Complexity_of_Cooperation.html?id=J0dgRGMdjmQC&q=nations&utm_source=gb-gplus-shareThe Complexity of Cooperation
