2 years later, still no clear answer...
Which means that most people (like me...), having played this game for years, still does not have a clear clue of what is true or not.
If Goebbels has the "susceptibility to allies" trait, I consider that, when influencing another country, it actually does something on the calculation, in favour of me (axis) or not...
but what? the word "susceptibility" is not clear to me. English is not my language, and even when I ask to an American colleague, he says that he can understand it both way: Goebbels can be irritating, hence not helping much other nations to move forward axis, or convincing...
The definition is very tricky; »Likely or liable to be influenced or harmed by a particular thing.«
"Influenced"? ok, so the countries will go faster toward me...
but "harmed"? So then no, they will be scared away...
What is even more confusing is the colour of the bonus: 10%. Allies or Axis, it is always green! So impossible to know when a valour is positive or negative to me, axis...
It is probably too late as HOI4 is on the way.
But, in HOI4, please Paradox, give clearly the pro/con for what a trait/experience/skill does...