297519
Published with the end of the Cold War , the book analysed the United States support for Pol Pot and the Khmer Rouge against Soviet - backed Vietnam .
 Pol Pot, Soviet, Vietnam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pol Pot, Soviet, Vietnam