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

Iraqi Christian receive holy communion during a mass on Christmas at St. George Chaldean Church in Baghdad, Iraq December 25, 2017. REUTERS/Khalid al Mousily

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

Iraqi people attend a mass at on Christmas at St. George Chaldean Church in Baghdad, Iraq December 25, 2017. REUTERS/Khalid al Mousily

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

Iraqi Christians children carry candles during a mass on Christmas eve at St.George Chaldean Church in Baghdad, Iraq December 24, 2017. REUTERS/Khalid al Mousily

Iraqi Christian priests pray during a mass on Christmas eve at St.George Chaldean Church in Baghdad, Iraq December 24, 2017. REUTERS/Khalid al Mousily

Iraqi Christians pray during a mass on Christmas eve at St.George Chaldean Church in Baghdad, Iraq December 24, 2017. REUTERS/Khalid al Mousily

Iraqi Christians pray during a mass on Christmas eve at St.George Chaldean Church in Baghdad, Iraq December 24, 2017. REUTERS/Khalid al Mousily

Iraqi Christians pray during a mass on Christmas eve at St.George Chaldean Church in Baghdad, Iraq December 24, 2017. REUTERS/Khalid al Mousily

The ruins of the Chaldean Catholic Cathedral Em Al Ahzan is seen at the archaeological site of a castle in Kirkuk, Iraq August 3, 2017. REUTERS/Ako Rasheed

The ruins of the Chaldean Catholic Cathedral Em Al Ahzan is seen at the archaeological site of a castle in Kirkuk, Iraq August 3, 2017. REUTERS/Ako Rasheed

The ruins of the Chaldean Catholic Cathedral Em Al Ahzan is seen at the archaeological site of a castle in Kirkuk, Iraq August 3, 2017. REUTERS/Ako Rasheed

The ruins of the Chaldean Catholic Cathedral Em Al Ahzan is seen at the archaeological site of a castle in Kirkuk, Iraq August 3, 2017. REUTERS/Ako Rasheed