>The cases were broken down into three major support to resistance (STR) categories: disruption, coercion and regime change. The report found that "from 1940 to the present, nearly 70 percent of STR operations were conducted for disruptive purposes," while "non-disruptive cases were about equally divided between coercion and overthrow."

>Of the 47 cases analyzed, 23 were deemed "successful," 20 were designated "failures," two were classified as "partially successful" and two more—both during World War II—were called "inconclusive" as the broader conflict led to an Allied victory anyway. Coercion was the most successful method at a three-quarters rate of success or partial success, while disruption worked just over half the time and regime change only yielded the desired result in 29 percent of the cases reviewed.

>Other major findings included observations that most operations "were carried out under wartime conditions, with those being nearly twice as successful as cases conducted under peacetime conditions" and "support to nonviolent civil resistance seems to be more likely to succeed than support to armed resistance." At the same time, they were also "most effective when conducted in direct support of a military campaign rather than as an independent or main effort operation."

>In eight of the 20 failures found, the author blamed security breaches that clued the enemy in ahead of time, sometimes potentially through coverage in U.S. media, as may have been the case with newspaper stories prior to the abortive CIA-backed Bay of Pigs invasion of Cuba.

https://www.newsweek.com/us-guide-overthrow-government-special-forces-school-1419837