Here is what chat GPT said

In the sentence, the phrase “representatives of an enlightenment and civilized people” is used sarcastically by the speaker to describe the people they are negotiating with, whom they actually consider uncivilized and treacherous. In this context, the speaker is likely referring to the "Reds," a term historically used to describe communists, especially during the Cold War, thus indicating that the speaker does not genuinely consider them to be civilized.