Scranton, Margaret E., The Noriega Years: US-Panama Relations 1981-1990 , Boulder CO, Lynne Rienner, 1991, pp. 245 Charts the sharp changes in US policy from collaboration with Noriega 1981-87, and the decisions to oust him, 1987-89, and to invade October-December 1989. Also describes evolving internal politics, including elections and popular strikes and demonstrations.