19th century internationalists included bomb-throwing anarchists and the secret policemen who fought them, Marxist revolutionaries and respectable free marketeers. But they all embraced nationalism, the age’s most powerful transformative political creed, and assumed that nationalism and internationalism would go hand in hand. The wars of the twentieth century saw the birth of institutions that enshrined many of those ideals in durable structures of authority, most notably the League of Nations in World War I and the United Nations after World […]![]()
