Vietnam have often been characterised as a force that were so disgusted by Pol Pot's genocide that they stepped in and toppled the Khmer Rouge.
You can see this in most internet memes that generally go "When your treatment of your people is so horrible that a nation that just spent 30 exhausting years fighting the French, Japanese, Itself, and the United States decide to declare war against you".
How accurate is this? How much did Pol Pot's genocide factor in to Vietnam's decision to invade?
Hello, thanks for your question. I've answered something similar here: "to what extent did Vietnam invade Cambodia because they were horrified by the genocide?"