Now Playing: US Airstrikes Destroy More Than $500M in ISIS Cash

Now Playing: ISIS' New Executioner May Be Known to Authorities

Now Playing: US Officials on the Lookout for ISIS-Made Passports

Now Playing: Royal feud surrounding Harry, Meghan heats up

Now Playing: Pope Francis denounces religious extremism during Iraq visit

Now Playing: Pope Francis is on day 2 of his historic visit to Iraq

Now Playing: Meghan Markle's friends support her amid Buckingham Palace scandal

Now Playing: Secretary of Defense speaks out about 2nd attack on US base in Iraq

Now Playing: Royal family rift widens for Prince Harry, Duchess Meghan

Now Playing: Pope Francis visits Iraq

Now Playing: Pope Francis brings message of peace to Iraq

Now Playing: Artist uses volcanic ashes to create portrait

Now Playing: Inside the pope’s trip to Iraq

Now Playing: Myanmar unrest, Purim celebrations, Kentucky flooding; The Week in Photos

Now Playing: ABC News Live Update: Pope Francis in Iraq for 1st papal visit

Now Playing: Paragliders perform dazzling dance over Dubai

Now Playing: ABC News Live Update: US averaging 2 million vaccinations per day

Now Playing: Pope Francis visits Iraq

Now Playing: Pope arrives in Iraq for historic visit

Now Playing: Fake heiress who scammed NY elite speaks out after prison release