"In this photo taken with slow shutter speed Pope Francis leaves after celebrating an Epiphany Mass in St. Peter's Basilica at the Vatican, Sunday, Jan. 6, 2019. Pope Francis has appealed to European leaders to show ""concrete solidarity"" to 49 migrants stranded aboard a pair of rescue vessels. Francis, addressing faithful in St. Peter's Square Sunday, noted that the migrants, rescued in the Mediterranean. (AP Photo/Andrew Medichini)"