What is the main conflict in The Emperor: Downfall of an Autocrat by Ryszard Kapuscinski?

Emperor Haile Selassie ruled Ethiopia from 1930 to 1974. While his regime was dedicated to the improvement of Ethiopia and making economic progress to end or alleviate the suffering of the poor, corruption permeated through it, up to even the highest levels. When international attention was turned to the fact that nobles and dignitaries were living lives of luxury while hundreds of thousands were dying of disease and starvation, a revolution began in the country, ending ultimately in the Emperor's deposition.