A man dives into the Tigris river to cool down in the summer heat in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

A man dives into the Tigris river to cool down in the summer heat in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

People swim into the Tigris river to cool down in the summer heat, in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

People dive into the Tigris river to cool down in the summer heat, in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

People dive into the Tigris river to cool down in the summer heat in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

People dive into the Tigris river to cool down in the summer heat, in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani

A child jumps into the Tigris river to cool down in the summer heat, in Baghdad, Iraq July 2, 2021. REUTERS/Thaier Al-Sudani TPX IMAGES OF THE DAY

A view shows Al-Khidr shrine on the banks of the Tigris river in Baghdad, Iraq, January 28, 2021. Picture taken January 28, 2021. REUTERS/Teba Sadiq

A woman lights candles to make a wish on the banks of the Tigris river near Al-Khidr shrine in Baghdad, Iraq, January 28, 2021. Picture taken January 28, 2021. REUTERS/Teba Sadiq

A view shows Al-Khidr shrine on the banks of the Tigris river in Baghdad, Iraq, January 28, 2021. Picture taken January 28, 2021. REUTERS/Teba Sadiq

People use a boat to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

People disembark boats they use to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

People sit in boats at the Tigris river in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

People disembark boats they use to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

People disembark boats they use to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

People use boats to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

A man disembarks a boat used to travel between the banks of the Tigris river to avoid the traffic jams in Baghdad, Iraq, January 11, 2021. Picture taken January 11, 2021. REUTERS/Thaier Al-Sudani

An Iraqi Mandaean priest baptises a worshipper in the Tigris river during the Eid Al-Ezdehar in Baghdad, Iraq, November 1, 2020. REUTERS/Khalid al-Mousily

An Iraqi Mandaean priest baptises a worshipper in the Tigris river during the Eid Al-Ezdehar in Baghdad, Iraq, November 1, 2020. REUTERS/Khalid al-Mousily

An Iraqi Mandaean priest baptises a worshipper in the Tigris river during the Eid Al-Ezdehar in Baghdad, Iraq, November 1, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars in Mosul, Iraq July 27, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars in Mosul, Iraq July 27, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars in Mosul, Iraq July 27, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars in Mosul, Iraq July 27, 2020. REUTERS/ Khalid al-Mousily

A view shows damaged and destroyed houses in the old city of Mosul on the Tigris River in Mosul, Iraq, June 3, 2020. Picture taken June 3, 2020. REUTERS/Abdullah Rashid To match Special Report IRAQ-IRAN/MOSUL

Luay Shaker and his wife Rasha Saeed's rented house is seen between the destroyed houses near the Tigris River in the old city of Mosul, Iraq June 3, 2020. Picture taken June 3, 2020. REUTERS/Abdullah Rashid To match Special Report IRAQ-IRAN/MOSUL

Iraqis cross the Tigris River by a boat near a bridge which was destroyed during the war against Islamic State militants in Mosul, Iraq June 1, 2020. Picture taken June 1, 2020. REUTERS/Abdullah Rashid To match Special Report IRAQ-IRAN/MOSUL

Iraqi children swim in the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily

Iraqi children dive into the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily

A boy dives into the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily TPX IMAGES OF THE DAY

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily

An Iraqi boy dives into the Tigris river to cool down, as the temperature soars while pools are closed due to curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq June 10, 2020. Picture taken June 10, 2020. REUTERS/Khalid al-Mousily

People pose for a souvenir photo at a tea house by the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

A bridge over the Tigris River which connects Hasankeyf to the other side of the river is seen nearly submerged by the waters of Ilisu Dam in Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

People pose for a souvenir photo by the bridge across the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

People rest at a tea house by the Tigris River that will be submerged by the waters of Ilisu Dam in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

People pose for a souvenir photo at a tea house by the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

People pose for a souvenir photo by the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

People pose for a souvenir photo by the bridge across the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

A village guard, with a wall constructed around the Hasankeyf fortress, stands by the Tigris River in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

Houses submerged by the rising waters of the Tigris River are seen in Hasankeyf in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

Iraqi demonstrators are seen on the bank of Tigris River during ongoing anti-government protests in Baghdad, Iraq December 23, 2019. REUTERS/Saba Kareem

General view of destroyed houses in front of Tigris river at the old city of Mosul, Iraq December 7, 2019. Picture taken December 7, 2019. REUTERS/Abdullah Rashid

Er Rizk Mosque from the 15th century is transported from the ancient town of Hasankeyf by the Tigris river, which will be significantly submerged by the Ilisu dam, to the new Hasankeyf in southeastern Turkey, December 16, 2019. REUTERS/Sertac Kayar TPX IMAGES OF THE DAY

Er Rizk Mosque from the 15th century is transported from the ancient town of Hasankeyf by the Tigris river, which will be significantly submerged by the Ilisu dam, to the new Hasankeyf in southeastern Turkey, December 16, 2019. REUTERS/Sertac Kayar

Er Rizk Mosque from the 15th century is transported from the ancient town of Hasankeyf by the Tigris river, which will be significantly submerged by the Ilisu dam, to the new Hasankeyf in southeastern Turkey, December 16, 2019. REUTERS/Sertac Kayar

A woman reacts as Er Rizk Mosque from the 15th century is transported from the ancient town of Hasankeyf by the Tigris river, which will be significantly submerged by the Ilisu dam, to new Hasankeyf in southeastern Turkey, December 16, 2019. REUTERS/Sertac Kayar

Iraqi demonstrators perform a somersault as they practice parkour during ongoing anti-government protests, near the Tigris River in Baghdad, Iraq, December 9, 2019. REUTERS/Alaa al-Marjani TPX IMAGES OF THE DAY

Iraqi demonstrators are seen on the bank of Tigris River during the ongoing anti-government protests, in Baghdad, Iraq November 17, 2019. REUTERS/Thaier al-Sudani

Demonstrators are seen on the bank of Tigris River in front of riot police on a boat during an anti-government protest in Baghdad, Iraq October 30, 2019. REUTERS/Thaier Al-Sudani

Mehmet Selim Acar, a resident of Celikkoy, which will be significantly submerged by the Ilisu Dam, sits overlooking the Tigris River in southeastern Turkey, October 4, 2019. Picture taken October 4, 2019. REUTERS/Sertac Kayar

A view of Hasankeyf, which will be significantly submerged by the Ilisu Dam, by the Tigris river in the southeastern town of Hasankeyf, Turkey, October 3, 2019. Picture taken October 3, 2019. REUTERS/Sertac Kayar

A view of Hasankeyf, which will be significantly submerged by the Ilisu Dam, by the Tigris River in the southeastern town of Hasankeyf, Turkey, October 3, 2019. Picture taken October 3, 2019. REUTERS/Sertac Kayar

A view of Hasankeyf, which will be significantly submerged by the Ilisu Dam, by the Tigris River in the southeastern town of Hasankeyf, Turkey, October 3, 2019. Picture taken October 3, 2019. REUTERS/Sertac Kayar

An old cemetery is seen in Hasankeyf, which will be significantly submerged by the Ilisu Dam, by the Tigris river in the southeastern town of Hasankeyf, Turkey, October 3, 2019. Picture taken October 3, 2019. REUTERS/Sertac Kayar

People are seen at the sulfur fountain, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid

People sit in water after being covered with mud, which helps to treat the skin diseases, on banks of Tigris river west of Mosul, Iraq August 20, 2019. Picture taken August 20, 2019. REUTERS/Abdullah Rashid TPX IMAGES OF THE DAY