Democratic presidential candidate former Vice President Joe Biden bends back to avoid the hand of Senator Bernie Sanders as Sanders points past Biden during the U.S. Democratic presidential candidates debate at the Tyler Perry Studios in Atlanta, Georgia, U.S. November 20, 2019.

Laser lights are seen behind a demonstrator during a protest against Chile's government in Santiago, Chile, November 18, 2019.

A child looks on as people wait for Pope Francis to conduct the Holy Mass at the National Stadium in Bangkok, Thailand, November 21, 2019.

A surfer drops in on a large wave at Praia do Norte in Nazare, Portugal November 20, 2019.

Supporters of former Bolivian President Evo Morales mourn the death of a man, who they say was killed by security forces, in Sacaba, near Cochabamba, Bolivia November 17, 2019.

A demonstrator throws an object at a police vehicle during a protest against Chile's government in Santiago, Chile November 19, 2019.

ISU Grand Prix of Figure Skating - 2019 Rostelecom Cup - Megasport Sport Palace, Moscow, Russia - November 17, 2019 Russia's Evgenia Tarasova and Vladimir Morozov during the Exhibition Gala.

A man walks along the canal as golden, green and rusty leaves colour the autumn in Thun-Leveque, France November 19, 2019.

Masaichi Kawasaki, 69, a descendent of 'Hidden Christians', crosses himself as he chants 'orasho' in front of an altar adorned with a statue of the Virgin Mary during a ceremony to mark the eve of the birth of the Virgin Mary at his home on Ikitsuki Island, Nagasaki Prefecture, Japan, November 5, 2019. Japan's "Kakure Kirishitan," or "Hidden Christians," preserved their faith in secret during centuries of persecution. "I worry that what my ancestors worked hard to preserve will disappear, but that is the trend of the times," said Kawasaki. "I have a son but I don't expect him to carry on," he added. "To think this will disappear is sad, without a doubt." REUTERS/Issei Kato

Members of the Emergencies Ministry of the separatist Donetsk People's Republic demine the area at the militants' former positions following troop withdrawals near the settlement of Petrovskoye (Petrivske) in Donetsk region, Ukraine November 19, 2019.

U.S. President Donald Trump holds what appears to be a prepared statement and handwritten notes after watching testimony by U.S. Ambassador to the European Union Gordon Sondland as he speaks to reporters prior to departing for travel to Austin, Texas from the South Lawn of the White House in Washington, U.S., November 20, 2019.

An Iraqi demonstrator wears a mask near burning tires during ongoing anti-government protests in Najaf, Iraq November 18, 2019.

A protester tries to escape from a sewage tunnel inside the Hong Kong Polytechnic University campus during protests in Hong Kong, China, November 19, 2019.

Anti-government protesters trapped inside Hong Kong Polytechnic University abseil onto a highway and escape before being forced to surrender during a police besiege of the campus in Hong Kong, China November 18, 2019. HK01/Handout via REUTERS.

A woman sits by the door of her shop during a period of seasonal high water in Venice, Italy, November 17, 2019.

Lightning strikes near an Emirates A380 plane at Christchurch Airport, New Zealand November 20, 2019 in this still image obtained from a social media video. GCH Aviation/via REUTERS

Colin Kaepernick puts his hand over his heart in response to a comment at a special training event created by Kaepernick to provide greater access to scouts, the media, and the public, at Charles. R. Drew High School in Riverdale, Georgia, U.S., November 16, 2019.

A man wearing a Trump presidential campaign "Make America Great Again" hat listens as Lt. Colonel Alexander Vindman (L), director for European Affairs at the National Security Council, testifies before a House Intelligence Committee hearing as part of the impeachment inquiry into U.S. President Donald Trump on Capitol Hill in Washington, U.S., November 19, 2019.