Chiefs of staff around the world have shared their experiences of being at the center of big political decisions.
They are often the second-most powerful people in the room, yet remain unknown to most voters.
The (chief of staff) role has this professional intimacy, it's such a unique role and the biggest takeaway was that at the end of the day it does come back to friendship.
According to Phoebe Saintilan-Stocks, author of The Right Hand, trust and loyalty are key to the role, and once lost, it's impossible to continue working together.
Author's summary: Chiefs of staff share insights into their roles.