The Nicaraguan Revolution summarizes the history of Nicaragua from the early 20th century to the 1980s, including key events like the Somoza dictatorship, the 1972 earthquake, and the rise of the Sandinistas. It describes the US's shifting policies towards Nicaragua under different presidents, from supporting Somoza to backing the Contras against the Sandinista government. It also provides an overview of the Iran-Contra affair, in which the US illegally sold arms to Iran and used the proceeds to fund the Contras, defying Congress.