His appearance today was unannounced but not unexpected as Swiss Guards were posted around the square, a sign that the pope would be present at some point.

A convalescing Pope Francis has greeted the crowd in St. Peter’s Square on Palm Sunday, wishing more than 20,000 faithful a “Happy Palm Sunday, Happy Holy Week."

Pope Francis made a brief appearance in St. Peter's Square on Sunday at the end of a Palm Sunday service, greeting the crowds from his wheelchair as he continues to recover from double pneumonia. "Happy Palm Sunday,