Pope Leo XIV tells a massive crowd of Catholic youths they are a sign that a different world is possible: 'We are with the young people of Gaza. We are with the young people of Ukraine.'

The Chicago-born pope said that a gathering of young faithfuls in Rome was a "sign that a different world is possible."

Pope Leo has urged more than a million Catholic youths to “spread your enthusiasm and the witness of your faith” when they return home to some 150 countries, during a Mass ending a week-long encounter with the next generation of faithful.