Looking through the traits, I noticed spies and diplomats get a bump in stats for every mission succeeded.

What constitutes mission succeed for diplomats? Does it mean that any sort of deal (or just a cheerful goodbye w/o any deal) is enough for success even if its just a map exchange?

Also I hadn't realised that bad diplomat trait will be increased for failures. Again what constitutes a failure? No deal or a bad parting like 'bandying words is a waste of time' etc.

Condition not MissionSucceeded
Affects BadDiplomat 1 Chance 100