HAVANA — Cuban President Raul Castro has raised the possibility of leaving his post, but does not say when he might do so.

The Cuban leader made the comments during an appearance Friday with Russian President Dmitri Medvedev.

Castro told reporters he's about to turn 82 years old and added, "I have the right to retire, don't you think?"

Castro is due to be sworn in to a new five-year term on Sunday. He urged people to listen closely to his speech that day, promising it would be "interesting."