A view of a slum is seen along a seashore in Mumbai, India, November 28, 2019. Picture taken November 28, 2019. REUTERS/Prashant Waydande

The U.S. Capitol building is seen in a reflection on Capitol Hill in Washington, U.S., November 27, 2019. REUTERS/Loren Elliott

The sun sets over the Saint Isaac's Cathedral in Saint Petersburg, Russia November 25, 2019. REUTERS/Anton Vaganov TPX IMAGES OF THE DAY

The Eiger, Guggi and Giesen Glaciers are pictured near the Jungfrau in the Swiss Alps in Wengen, Switzerland August 27, 2019. Picture taken August 27, 2019. REUTERS/Denis Balibouse

The U.S. Capitol building is pictured at sunset on Capitol Hill in Washington, U.S., November 22, 2019. REUTERS/Loren Elliott

The skyline of Beirut is seen during sunset from Antelias, Lebanon November 20, 2019. REUTERS/Andres Martinez Casares

The skyline of Beirut is seen during sunset from Antelias, Lebanon November 20, 2019. REUTERS/Andres Martinez Casares

A fisherman digs for bait in front of the Liverpool skyline on the beach at New Brighton, Britain November 19, 2019. REUTERS/Phil Noble

General view shows the city of El Alto, near La Paz, Bolivia November 17, 2019. REUTERS/Henry Romero

General view shows the city of El Alto, near La Paz, Bolivia November 17, 2019. REUTERS/Henry Romero

A view of the White House by night in Washington, U.S., November 16, 2019. REUTERS/Yara Nardi

A statue of Jesus is seen at sunset, ahead of Pope Francis' visit to Thailand, in Nakhon Pathom province, Thailand November 16, 2019. REUTERS/Soe Zeya Tun

A view shows the dome of the U.S. Capitol building during sunset in Washington, U.S., November 15, 2019. REUTERS/Yara Nardi

A view shows the U.S. Capitol building during sunset in Washington, U.S., November 15, 2019. REUTERS/Yara Nardi

A view shows the dome of the U.S. Capitol building during sunset in Washington, U.S., November 15, 2019. REUTERS/Yara Nardi

Creeping desert sands surround the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

Creeping desert sands surround the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

Creeping desert sands surround the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

Tourists walks to the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

Creeping desert sands surround the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

Creeping desert sands surround the Royal Cemeteries of Meroe Pyramids in Begrawiya at River Nile State, Sudan November 10, 2019. Picture taken November 10, 2019. REUTERS/Mohamed Nureldin Abdallah

People walk along a bridge at a sunny day in Moscow, Russia, November 14, 2019. REUTERS/Evgenia Novozhenina

Densely built houses sift toward the farmlands due to the population growth in Kathmandu, Nepal November 14, 2019. REUTERS/Navesh Chitrakar

Larches stand in the snow near the village of Seefeld, Austria, November 14, 2019 REUTERS/Angelika Warmuth

Beer bottles are pictured at the traditional Cantillon brewery, the oldest lambic brewery in Brussels, Belgium November 13, 2019. REUTERS/Francois Lenoir

A general view of houses in Kirkenes, Norway, October 24, 2019. REUTERS/Maxim Shemetov

Sun shines through steam rising from chimneys of a power plant in Moscow, Russia November 13, 2019. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

Hindu devotees sit together on the floor of a temple to observe Rakher Upabash, in Dhaka, Bangladesh, November 12, 2019. REUTERS/Mohammad Ponir Hossain

A view of Havana, Cuba, October 29, 2019. Picture taken on October 29, 2019. REUTERS/Alexandre Meneghini

A view of Havana, Cuba, October 29, 2019. Picture taken on October 29, 2019. REUTERS/Alexandre Meneghini

A view of the colonial-era fortress "El Morro Cabana" in Havana, Cuba, November 10, 2019. Picture taken on November 10, 2019. REUTERS/Alexandre Meneghini

The Golden Temple is seen illuminated as Sikh devotees arrive on the eve of the 550th birth anniversary of Guru Nanak Dev, the first Sikh Guru and founder of Sikh faith, in Amritsar, India, November 11, 2019. REUTERS/Munish Sharma

A man walks along a staircase in a pedestrian tunnel in Moscow, Russia November 8, 2019. REUTERS/Evgenia Novozhenina

Some of the few standing houses in High Rock were elevated two-story homes in east Grand Bahama, Bahamas, October 6, 2019. Picture taken October 6, 2019. REUTERS/Gabriella N. Baez

Bars of steel are seen on a storage shelf at Swiftool Precision Engineering Ltd's facility near Mansfield, Britain, October 30, 2019. Picture taken October 30, 2019. REUTERS/Phil Noble

An observational tower overlooks the Norway-Russia border from the Norwegian side in Pasvik valley, Finnmark county, Norway, October 23, 2019. REUTERS/Maxim Shemetov SEARCH "NORWAY-RUSSIA BORDER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A view shows a World War Two monument To The Defenders of Soviet Arctic, which is located in Murmansk, Russia, October 27, 2019. REUTERS/Maxim Shemetov SEARCH "NORWAY-RUSSIA BORDER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Hindu devotees sit together on the floor of a temple to observe Rakher Upabash, in Narayangonj near Dhaka, Bangladesh, November 5, 2019. REUTERS/Mohammad Ponir Hossain

A general view shows the town of Mailuu-suu at the foot of the mountains, Kyrgyzstan, October 23, 2019. Picture taken October 23, 2019. REUTERS/Pavel Mikheyev

The Houses of Parliament are seen during a sunset in London, Britain, November 4, 2019. REUTERS/Yara Nardi

A person takes a picture of Wotruba church as the sun sets in Vienna, Austria November 3, 2019. REUTERS/Leonhard Foeger

A person takes a picture of Wotruba church as the sun sets in Vienna, Austria November 3, 2019. REUTERS/Leonhard Foeger

A general view from the Teleferico cable car shows the city of La Paz, Bolivia, October 31, 2019. Picture taken October 31, 2019. REUTERS/Kai Pfaffenbach

A crow sits on a barricade in front of India Gate amidst smog in New Delhi, November 3, 2019. REUTERS/Adnan Abidi

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

Waves crash against a lighthouse during a windy day in Boulogne-sur-Mer, France, 2 November, 2019. REUTERS/Pascal Rossignol

A cat is seen in the village of Zolote, disengagement area of government and Russian-backed rebel troops, in the eastern Ukrainian region of Luhansk, Ukraine November 1, 2019. REUTERS/Gleb Garanich

A house with windows covered with wood to protect from shrapnel is seen in the village of Katerynivka, disengagement area of government and Russian-backed rebel troops, in the eastern Ukrainian region of Luhansk, Ukraine November 1, 2019. REUTERS/Gleb Garanich

Deer are seen between tombstones at the old jewish part of the Zentralfriedhof cemetery on an autumn day ahead of All Saints Day in Vienna, Austria, October 30, 2019. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY

Garage doors are seen outside Block 23 in an apartment neighbourhood in New Belgrade, Serbia, July 31, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica SEARCH "ARCHITECTURE DJURICA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

An imam opens the door of an old mosque, known as Grande Mosquee, in Agadez, Niger October 29, 2019. REUTERS/ Zohra Bensemra

Ducks swim at a lake during a sunny autumn day near Belapatfalva, Hungary, October 27, 2019. REUTERS/Bernadett Szabo

Autumnal foliage is relected on a lake near Belapatfalva, Hungary, October 27, 2019. REUTERS/Bernadett Szabo

A general view shows houses decorated with lanterns and lights during the Tihar festival, also called Diwali, the Hindu festival of lights in Kathmandu, Nepal, October 27, 2019. REUTERS/Navesh Chitrakar

A general view shows houses decorated with lanterns and lights during the Tihar festival, also called Diwali, the Hindu festival of lights in Kathmandu, Nepal, October 27, 2019. REUTERS/Navesh Chitrakar

A police car is seen in front of the Great Pyramids in Giza, on the outskirts of Cairo, Egypt October 26, 2019. REUTERS/Mohamed Abd El Ghany

A general view shows pyramids in Giza, on the outskirts of Cairo, Egypt October 26, 2019. REUTERS/Mohamed Abd El Ghany

Pumpkins are pictured in a field on an autumn morning near Oulens, Switzerland, October 24, 2019. REUTERS/Denis Balibouse