Choir members practice at St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

Workers are seen at St. Joseph Chaldean Cathedral, where Pope Francis will held a mass upon his upcoming visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

A woman looks at the Bible at St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

An Iraqi soldier walks past the entrance of St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

A man is seen outside the St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

A nun prepares a religious clothing at St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

Iraqi Christians wearing protective face masks attend a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily TPX IMAGES OF THE DAY

Iraqi Christians wearing protective face masks attend a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

Iraqi Christians wearing protective face masks attend a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

Iraqi Christians attend a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

An Iraqi priest holds a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

A Christian woman prays during a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

Iraqi Christians wearing protective face masks attend a mass on Christmas at St. Elya Chaldean Church in Baghdad, Iraq December 25, 2020. REUTERS/Khalid al-Mousily

Christians attend a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

A woman prays as she attends a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

Christians attend a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

A woman prays as she attends a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

Christians attend a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

Iraqi Christians attend a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

Christians attend a Sunday service in one of the Chaldean churches that reopened after months of closure due to the coronavirus disease (COVID-19) outbreak, in Baghdad, Iraq October 11, 2020. REUTERS/Teba Sadiq

Iraqi Christians leave after a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A priest shakes hands with Christian worshippers after a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A priest ignites a fire during a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A priest celebrates a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A priest conducts a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A Christian woman prays during a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

An Iraqi woman lights candles during a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

Iraqi Christians pray during a mass on Christmas Day at St. George Chaldean Church in Baghdad, Iraq December 25, 2019. REUTERS/Khalid al Mousily

A priest (L) leads a mass to celebrate Palm Sunday at Mar George Chaldean Church in Baghdad, Iraq April 14, 2019. REUTERS/Alaa al-Marjani

An Iraqi Christian attends a mass to celebrate Palm Sunday at Mar George Chaldean Church in Baghdad, Iraq April 14, 2019. REUTERS/Alaa al-Marjani

Iraqi Christians attend a mass to celebrate Palm Sunday at Mar George Chaldean Church in Baghdad, Iraq April 14, 2019. REUTERS/Alaa al-Marjani

Iraqi Christians pray during a mass to celebrate Palm Sunday at Mar George Chaldean Church in Baghdad, Iraq April 14, 2019. REUTERS/Alaa al-Marjani

People light candles after a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Ammar al-Hakim, head of the Hikma movement, speaks during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

A priest plays with a child after a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

A priest holds a cross after a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. Picture shot through a wooden fence. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians play outside St George Chaldean Catholic Church after a mass on Christmas in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians play outside St George Chaldean Catholic Church after a mass on Christmas in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

A priest hugs a Christian girl after a mass on Christmas at St George Chaldean Catholic Church in Baghdad, Iraq December 25, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during Mass at St George Chaldean Catholic Church in Baghdad, Iraq December 23, 2018. REUTERS/Thaier Al-Sudani

An Iraqi Christian woman prays during Mass at St George Chaldean Catholic Church in Baghdad, Iraq December 23, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during Mass at St George Chaldean Catholic Church in Baghdad, Iraq December 23, 2018. REUTERS/Thaier Al-Sudani

An Iraqi Christian prays during Mass at St George Chaldean Catholic Church in Baghdad, Iraq December 23, 2018. REUTERS/Thaier Al-Sudani

Iraqi Christians pray during Mass at St George Chaldean Catholic Church in Baghdad, Iraq December 23, 2018. REUTERS/Thaier Al-Sudani

Archbishop Bahar Matti Warda, Archbishop of Erbil and the Chaldean Catholic Archeparchy of Erbil, holds the pen given to him by U.S. President Donald Trump after he used it to sign the Iraq and Syria Genocide Relief and Accountability Act of 2018 in the Oval Office at the White House in Washington, U.S. December 11, 2018. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

Archbishop Bahar Matti Warda, Archbishop of Erbil and the Chaldean Catholic Archeparchy of Erbil, holds the pen given to him by U.S. President Donald Trump after he used it to sign the Iraq and Syria Genocide Relief and Accountability Act of 2018 in the Oval Office at the White House in Washington, U.S. December 11, 2018. REUTERS/Jonathan Ernst

Chaldean Catholic Patriarch of Babylon Louis Raphael I Sako talks during a news conference at the Vatican June 27, 2018. REUTERS/Stefano Rellandini

Chaldean Catholic Patriarch of Babylon Louis Raphael I Sako smiles during a news conference at the Vatican June 27, 2018. REUTERS/Stefano Rellandini

Chaldean Catholic Patriarch of Babylon Louis Raphael I Sako talks during a news conference at the Vatican June 27, 2018. REUTERS/Stefano Rellandini

Chaldean Catholic Patriarch of Babylon Louis Raphael I Sako talks during a news conference at the Vatican June 27, 2018. REUTERS/Stefano Rellandini

Chaldean Church of St. Paul is illuminated with red light in protest against the persecution of Christians around the world, particularly in Syria and Iraq, in Mosul, Iraq February 24, 2018. Picture taken February 24, 2018. REUTERS/Khalid Al-Mousily

Chaldean Church of St. Paul is illuminated with red light in protest against the persecution of Christians around the world, particularly in Syria and Iraq, in Mosul, Iraq February 24, 2018. Picture taken February 24, 2018. REUTERS/Khalid Al-Mousily

Chaldean Church of St. Paul is illuminated with red light in protest against the persecution of Christians around the world, particularly in Syria and Iraq, in Mosul, Iraq February 24, 2018. Picture taken February 24, 2018. REUTERS/Khalid Al-Mousily

Chaldean Church of St. Paul is illuminated with red light in protest against the persecution of Christians around the world, particularly in Syria and Iraq, in Mosul, Iraq February 24, 2018. Picture taken February 24, 2018. REUTERS/Khalid Al-Mousily

An Iraqi Christian priest carries a cross during a mass on Christmas at St. George Chaldean Church in Baghdad, Iraq December 25, 2017. REUTERS/Khalid al Mousily