Pope Francis in Iraq: Pope visits Mosul, former HQ of Daesh

Pope Francis, center, arrives at the Irbil international airport, Iraq, Sunday.

Pope Francis (C), looks on at the ruins of the Syriac Catholic Church of the Immaculate Conception (al-Tahira-l-Kubra), in the northern city of Mosul on March 7. Pope Francis, on his historic Iraq tour, visits today Christian communities that endured the brutality of the Islamic State group until the jihadists' "caliphate" was defeated three years ago

Pope Francis releases a white dove during a prayer for war victims at 'Hosh al-Bieaa', Church Square, in Mosul's Old City, Iraq, March 7.

Pope Francis attends a prayer for war victims at 'Hosh al-Bieaa', Church Square, in Mosul's Old City.

Pope Francis rides in a golf cart at the ruins of the Syriac Catholic Church of the Immaculate Conception (al-Tahira-l-Kubra), in the old city of Iraq's northern Mosul on March 7..

A handout picture released by the Vatican media office, shows Pope Francis, releasing a white dove at a square near the ruins of the Syriac Catholic Church of the Immaculate Conception (al-Tahira-l-Kubra), in the old city of Iraq's northern Mosul.

Pope Francis holds a minute of silence at the destroyed cathedral.