Sky News Washington Correspondent Annelise Nielsen says there is a “very real possibility” US President Joe Biden could decline quickly.
“I have to say, for someone watching this day in, day out, it’s not something to discount,” she told Sky News host Andrew Bolt.
“We do know he’s quite advanced in age and that doesn’t mean that it precludes you from doing the job but there’s definitely at least a bit of cause for concern among the general populace.”