Biden's U.N. schedule fuels presidential speculation

Vice President Joe Biden's recent wave of meetings with foreign leaders now has many foreign officials wondering if he's getting ready to run for the White House.

On Tuesday, Biden sat down with three heads of state and one top official during the United Nations meetings in New York. He presided over the anti-Islamic State summit, and as he concluded that meeting, Danish Foreign Minister Kristian Jensen accidentally promoted Biden.

"Mr. President, vice president — sorry," Jensen reportedly said. "Well, could have been! Can be! Who knows? If you have ... news ... to tell us here, please let us know," he said, to which Biden smiled and made an inaudible comment.

Federica Mogherini, vice president of the EU Commission, spoke next and was careful to emphasize the word "vice" before addressing Biden, who again smiled and made a remark not caught by microphones.