If you get into a siege mentality you greatly limit the talent that that can help you and you also give gatekeepers too much power. Leadership isolates. While that is always a problem it becomes a dangerous problem when you are the leader of a group that has a siege mentality.
The siege mentality exacerbates a mass assumption that anything that comes from outside the group cannot possibly be correct. Therefore you must always keep some people around you who are mature enough to be loyal two you while being skeptical of you at the same time; “Yes Boss” doesn’t always serve you well.
When a candidate is under attack by a hostile press, you do not put yourself on a fortress, you put the press inside of a fenced in ring and shoot arrows into the fence when necessary. If your organization does not understand what I just explained you are already in trouble.