Iraq Christians prepare posters welcoming Pope Francis to St. Joseph's Chaldean Church ahead of the Pope's visit, in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Khalid Mohammed)

Father Nazeer Dako arranges a Vatican flag to welcome Pope Francis at St. Joseph's Chaldean Church ahead of the Pope's visit, in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Khalid Mohammed)

Posters welcoming Pope Francis are prepared at St. Joseph's Chaldean Church ahead of the Pope's visit, in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Khalid Mohammed)

Iraqi health personnel wait to receive a coronavirus vaccine at a clinic in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Hadi Mizban)

An Iraqi medical worker prepares a shot of the Sinopharm coronavirus vaccine to administer to health personnel, at a clinic in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Hadi Mizban)

An Iraqi medic administers a shot of the Sinopharm coronavirus vaccine to a man giving a thumbs up, during vaccination of health personnel, at a clinic in Baghdad, Iraq, Tuesday, March 2, 2021. (AP/Photo/Hadi Mizban)