Conversation so far:
What is the Law of Peoples?
John Rawls formulated a comprehensive theory of international politics with the publication of The Law of Peoples.
What was the main point of John Rawls' theory of international politics?
John Rawls claimed there that well-ordered peoples could be either liberal or decent.

Question: What does liberal mean in this context?
Self-contained rewrite: What does liberal mean in the context of John Rawls Law of Peoples?