Walt Rostow argued communism was incompatible with economic development and was influential in persuading Presidents Kennedy and Johnson to get more involved in Vietnam.
Musine Kokalari was imprisoned and tortured by the communist regime in Albania in 1946 for standing up for free speech.
North and South Korea explained in four questions and answers.
Previous efforts to cement national cohesion offer a model but also, says a historian, a warning.
Oscar nominated documentary The Look of Silence follows an optometrist whose brother was killed in Indonesia's 1965 massacre. But to understand the bigger picture, viewers should watch its prequels.