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, but remain largely unknown to 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.
In the book "The Right Hand" by Phoebe Saintilan-Stocks, eight chiefs of staff offer insight into their roles supporting and challenging world leaders.
Saintilan-Stocks notes that trust and loyalty are core to the role, and once lost, it's impossible to continue working together.
Author's summary: Chiefs of staff share their experiences.