From Jake Tapper:

ABC NEWS: “Senator, David Petraeus just arrived in Pakistan, do you have a message for him?”

OBAMA: (Smiles, says something no one can hear and gets in his car.)

Mike Calderon reports that the question was asked by Tapper himself. He also said that Obama, who’d promised a presser on Wednesday, has no, through ABC News reporter/Obama spokesperson Linda Douglass, backed out of it.