Women walk near posters depicting Syria's President Bashar al-Assad, during the country's presidential elections in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

Syria's President Bashar al-Assad gestures as he leaves a polling station after he casted his vote, during the country's presidential elections in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

Syria's President Bashar al-Assad greets a supporter after casting his vote, during the country's presidential elections in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

Syria's President Bashar al-Assad and his wife Asma cast their votes during the country's presidential elections at a polling station in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

Syria's President Bashar al-Assad and his wife Asma cast their votes during the country's presidential elections at a polling station in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

Syria's President Bashar al-Assad leaves a polling station after casting his vote, during the country's presidential elections in Douma, Syria, May 26, 2021. REUTERS/Firas Makdesi 

A vendor waits for customers inside his shop near a damaged building in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

A man sits on a bicycle in front of shops in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

Seham Hamu's granchildren sit together at their home in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A man walk pasts damaged buildings in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Umm Bashir al-Saour's mother in-law sits at her home in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A man sits in front of closed shop with Syrian national flags painted on their shutters in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

A street vendor waits for customers in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A boy walks past shops in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

Umm Bashir al-Saour, 37-year-old widow, stands near her mother in-law in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Seham Hamu's grandson looks out from a door in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A general view shows a cemetery in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Umm Bashir al-Saour, 37-year-old widow, washes lettuce in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A national flag depicting a picture of Syria's President Bashar al-Assad flutters at a checkpoint in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

Socks are displayed for sale near damaged buildings in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

People walk near a cemetery in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A woman walks past a vehicle parked near damaged buildings in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki TPX IMAGES OF THE DAY 

Seham Hamu, 74-year old grandmother sits on a wheelchair next to her grandchildren in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Tires are displayed for sale near a damaged building in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

Women walk at a market in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

A woman walks past a mirror placed along a street in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A woman walks at a cemetery in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Seham Hamu's granddaughter sleeps on a mat laid out on the floor in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

Umm Bashir al-Saour, 37-year-old widow, cuts lettuce in Douma, in the eastern suburbs of Damascus, Syria March 9, 2021. Picture taken March 9, 2021. REUTERS/Omar Sanadiki 

A national flag depicting a picture of Syria's President Bashar al-Assad flutters at a checkpoint in Douma, in the eastern suburbs of Damascus, Syria March 10, 2021. Picture taken March 10, 2021. REUTERS/Omar Sanadiki 

People stand inside a polling station during the parliamentary elections in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

People stand outside a polling station during the parliamentary elections in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

Women stand as they wait their turn to cast the votes inside a polling station during the parliamentary elections in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki TPX IMAGES OF THE DAY 

Men ride on a motorbike near banners for parliamentary election candidates in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

A woman casts her vote inside a polling station during the parliamentary elections in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

A boy rides a bicycle near banners of parliamentary election candidates in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

Women walk near banners for parliamentary election candidates in Douma, in the eastern suburbs of Damascus, Syria July 19, 2020. REUTERS/Omar Sanadiki 

A man lies inside a hospital in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man sits on a motorcycle at the entrance of a hospital in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man throws out debris from an apartment building in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Women wait to be examined in a hospital in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A child pushes a cart selling cooked sweetcorn in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man walks past a banner depicting Syrian president Bashar al-Assad in Douma, outside Damascus, Syria, September 17, 2018. The town of Douma in eastern Ghouta was retaken by the government from rebels in April after heavy fighting and intense army bombardment and air strikes. REUTERS/Marko Djurica SEARCH "SYRIA LIFE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Unidentified children from Douma, Syria, attend a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

Unidentified children from Douma, Syria, attend a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

An unidentified boy from Douma, Syria, speaks at a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

An unidentified man and his son from Douma, Syria, attend a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

An unidentified man and his son from Douma, Syria, attend a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

Russia's ambassador Alexander Shulgin (L) and an unidentified boy from Douma, Syria, arrive at a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

Unidentified people from Douma, Syria, arrive at a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

Unidentified people from Douma, Syria, arrive at a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

Unidentified people from Douma, Syria, arrive at a news conference in the Hague, Netherlands, April 26, 2018. REUTERS/Michael Kooren 

A cyclist is seen through a shoes shop during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

Children react during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/Ali Hashisho 

Chemical products are seen inside a former rebel position shown to journalists during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

A child sits in a street during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

People walk in a street during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

A damaged mosque is seen during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

Chemical products are seen inside a former rebel position shown to journalists during a media tour in Douma near Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho 

Labels of the Organisation for the Prohibition of Chemical Weapons (OPCW) are seen iside a damaged house in Douma in Damascus, Syria April 23, 2018. REUTERS/ Ali Hashisho