US President Barack Obama says he would not run for a third term even if he could.

Speaking in an interview airing on CBS, he said his wife Michelle would not let him. The presidency took a toll on family life, he said, and the office "should be continually renewed by new energy and new ideas".

Mr Obama said he was not yearning for a third term (which is not possible anyway) because he was confident that things were a lot better in the United States than when he came into office.

Mr Obama said that what made him happiest about his presidency ending next January was a chance to get out of what he called the "the bubble" - the tight security controls over his travels outside the White House.

The bubble was  "the hardest thing about the presidency" he said.

See the interview below