Former President Carter is in
Nations talk because they want to achieve an advantage. If they think they can obtain that advantage by conversation then they will talk. This is generally true when two nations sit down together with the intent to work out mutual problems without any hidden agendas at work.
This has historically not been true with Communist nations unless they are under great stress, even threats to their existence. Communist North Korea frequently violates the UN cease fire and even attacks and sinks South Korean ships without provocation.