“City in the World,†the fifth and last book of Per Anders Fogelström’s famed Stockholm Series, covers the years from 1945 through 1968. The author depicts the progress of the Swedish social experiment during this period as Swedish society struggles to find peaceful solutions to many challenges. As ever, Fogelström displays great sympathy and insight into characters we know well by now, immersed in the world of their time, a time in which Stockholm has become a city in the world.