The latest high-profile departure from the Obama administration is Lawrence Summers, the head of the National Economic Council.
NPR: The Pressures Of Working In The White House
2.
Cassidy has also insisted that the Derry squad is not in a state of disarray despite Paddy Bradley's high-profile departure from the squad.
BBC: Eoin Bradley wants brother Paddy back in Derry squad
3.
Arnesen's resignation is the second high-profile departure announced by the club in a matter of weeks after long-serving assistant manager Ray Wilkins left earlier in the month.
BBC: Frank Arnesen resigns as Chelsea sporting director