Sneed exclusive . . .

Sneed has learned that Mayor Rahm Emanuel, who was once President Obama’s White House chief of staff, has been summoned to summit duty.
• Translation: Mayor Emanuel tells Sneed he has been asked by President Barack Obama’s chief of staff, Denis McDonough, to attend a meeting of all former White House chiefs of staff with President-elect Donald Trump’s new White House chief of staff, Reince Priebus, on Friday in Washington, D.C.

It was Priebus who suggested the meeting; McDonough heartedly agreed to oblige.

“It’s going to be some get-together,” said Emanuel, who plans to attend. “Denis asked if I’d help out.”

Consider: At least four former White House Chiefs of staff come from Chicago.
• Mayor Rahm Emanuel.
• Former U.S. Secretary Bill Daley, who was Rahm’s successor at the White House.
• Samuel K. Skinner, who was chief of staff under President George H.W. Bush (41)
• John Podesta, who was President Bill Clinton’s chief of staff, and who basically ran Hillary Clinton’s ill-fated campaign against Donald Trump.

Sneed hears Joshua Bolten, who served under George W. Bush (43); Dick Cheney, who was President Gerald Ford’s chief of staff; John Sununu, who served under George H.W. Bush (41), and James Baker and Ken Duberstein, who served under Ronald Reagan, also have been invited.

Sneed is told all four Chicago former White House chiefs of staff are planning to attend.

OPINION

“It’s not unusual for such a meeting to be called, but it is interesting considering the intelligence rifts caused by Trump’s tweets which is going to give Priebus a migraine — if he doesn’t have one already,” said a top Dem source.

Rahm: Take two

Returning from several weeks of travel, including a trip to Rome for the investiture of Cardinal Blase Cupich; a business trip to Mexico; and a flurry of meetings in Washington, D.C., a very tired Mayor Emanuel appeared buoyant at the after-party following opening night of the amazing Joffrey Ballet production of Christopher Wheeldon’s version of the “Nutcracker,” which brought the Auditorium Theatre audience to its feet Saturday night.

“I’ve always told you there is no more flexible mayor than I am,” Rahm chirped. “I used to be a ballet dancer.”

Sneedlings . . .

Today’s birthdays: Taylor Swift, 27; Dick Van Dyke, 91, and Jamie Foxx, 49.