Having previously served as a presidential chief of staff, Cheney redefined his office by taking on more of the day-to-day managerial responsibilities of the presidency.

In October 2012, Musin lost his job as presidential chief of staff and was reshuffled to the role of head of Kazakhstan's Accounts Committee.

In 2002, when Enrique Bolaños was elected president, Leal became one of his top aides, and became presidential chief of staff in November 2004.

Ernesto Leal, 60, presidential chief of staff and former foreign minister of Nicaragua, pneumonia.

In October 2003, Medvedev replaced Alexander Voloshin as presidential chief of staff.

As presidential chief of staff, Mr. Dirceu is generally regarded as the second most powerful man in Brazil, Latin America's largest country.

"This is not just a ceremonial event or propaganda," promised Jawed Ludin, the presidential chief of staff.

Nicknamed "Jesus Christ" because of his initials, Mr. Collin retained his previous position - presidential chief of staff.

"The president welcomed the offer of support of the two parties," the presidential chief of staff, Umar Daudzai, said in an interview this week.

This earned him the post of manager of the office of the presidential chief of staff in 1975.