Local police officers work at a checkpoint in the Villaverde neighbourhood during a partial lockdown between and within areas in six districts, amid the outbreak of the coronavirus disease (COVID-19), in Madrid, Spain September 23, 2020. REUTERS/Sergio Perez

A local police officer is seen at a checkpoint in the Villaverde neighbourhood during a partial lockdown between and within areas in six districts, amid the outbreak of the coronavirus disease (COVID-19), in Madrid, Spain September 23, 2020. REUTERS/Sergio Perez

A local police officer checks documents at a checkpoint in the Villaverde neighbourhood during a partial lockdown between and within areas in six districts, amid the outbreak of the coronavirus disease (COVID-19), in Madrid, Spain September 23, 2020. REUTERS/Sergio Perez

A local police officer checks documents at a checkpoint in the Villaverde neighbourhood during a partial lockdown between and within areas in six districts, amid the outbreak of the coronavirus disease (COVID-19), in Madrid, Spain September 23, 2020. REUTERS/Sergio Perez

Local police officers work at a checkpoint in the Villaverde neighbourhood during a partial lockdown between and within areas in six districts, amid the outbreak of the coronavirus disease (COVID-19), in Madrid, Spain September 23, 2020. REUTERS/Sergio Perez

A Saudi national travelling into Bahrain gets a nose swab at an immigration checkpoint on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

A medical staff takes a nose swab from an American national at a medical checkpoint on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

A immigration officer assists an American national in a car as he arrives at a medical checkpoint while crossing from Saudi Arabia into Bahrain on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

A medical inspector hands documents back to an American national in a car as he crosses from Saudi Arabia into Bahrain at an immigration checkpoint on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

A Saudi national travelling into Bahrain gets a nose swab at an immigration checkpoint on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

A medical inspector hands a passport back to a Saudi national in a car as he crosses into Bahrain at an immigration checkpoint on the King Fahd Causeway that reopened after coronavirus disease (COVID-19) restrictions were eased, at the Bahrain-Saudi border, Bahrain, September 15, 2020. REUTERS/Hamad I Mohammed

Soccer Football - DFB Cup - First Round - Eintracht Braunschweig v Hertha BSC - Eintracht Stadium, Braunschweig, Germany - September 11, 2020 Fans wearing face masks go through a checkpoint outside the stadium before the match REUTERS/Annegret Hilse DFB regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - DFB Cup - First Round - Eintracht Braunschweig v Hertha BSC - Eintracht Stadium, Braunschweig, Germany - September 11, 2020 Fans wearing face masks go through a checkpoint outside the stadium before the match REUTERS/Annegret Hilse DFB regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - DFB Cup - First Round - Eintracht Braunschweig v Hertha BSC - Eintracht Stadium, Braunschweig, German - September 11, 2020 Fans wearing face masks go through a checkpoint outside the stadium before the match REUTERS/Annegret Hilse DFB regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - DFB Cup - First Round - Eintracht Braunschweig v Hertha BSC - Eintracht Stadium, Braunschweig, German - September 11, 2020 Fans wearing face masks go through a checkpoint outside the stadium before the match REUTERS/Annegret Hilse DFB regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - DFB Cup - First Round - Eintracht Braunschweig v Hertha BSC - Eintracht Stadium, Braunschweig, German - September 11, 2020 Fans wearing face masks go through a checkpoint outside the stadium before the match REUTERS/Annegret Hilse DFB regulations prohibit any use of photographs as image sequences and/or quasi-video

A general view shows the checkpoint Vilcha on the border with Belarus, in Ukraine September 8, 2020. REUTERS/Valentyn Ogirenko

A general view shows the checkpoint Vilcha on the border with Belarus, in Ukraine September 8, 2020. REUTERS/Valentyn Ogirenko

An Indian Central Reserve Police Force (CRPF) personnel stands guard at a checkpoint along a highway leading to Ladakh, at Gagangeer in Kashmir's Ganderbal district September 2, 2020. REUTERS/Danish Ismail

A passenger reacts at a security checkpoint in Tribhuvan International Airport after it reopened with limited international flights allowed to operate amid the spread of the coronavirus disease (COVID-19) in Kathmandu, Nepal September 2, 2020. REUTERS/Navesh Chitrakar

A police personnel wearing personal protective equipment (PPE) waits for passengers at a security checkpoint inside the premises of Tribhuvan International Airport after it reopened with limited international flights allowed to operate amid the spread of the coronavirus disease (COVID-19) in Kathmandu, Nepal September 2, 2020. REUTERS/Navesh Chitrakar

Iraqi security forces carry the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

A member of Iraqi security forces checks the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces check the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces carry the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces gather near the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces gather near the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces inspect the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

Iraqi security forces stand near the remains of a vehicle at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

A member of Iraqi security forces stands at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

A member of Iraqi security forces walks at the site of a car bomb at a police checkpoint on the road between Kirkuk and Salahuddin province, Iraq September 1, 2020. REUTERS/Ako Rasheed

A minivan transporting medical specialists of an air ambulance, who arrived from Germany to pick up Russian opposition leader Alexei Navalny, drives through a security checkpoint outside a hospital in Omsk, Russia August 21, 2020. Navalny was taken ill with suspected poisoning en route from Tomsk to Moscow on a plane, which made an emergency landing in Omsk. REUTERS/Alexey Malgavko

Maggie Zhang and her boyfriend Sunny Gu, international students from China both studying for a Masters in Commerce at the University of Sydney, wave goodbye to Zhang's cousin Mario Wang as they make their way through to the security checkpoint at Kingsford Smith International Airport, before catching a flight to China, where they are moving back home to, during the coronavirus disease (COVID-19) outbreak, in Sydney, Australia, August 12, 2020. REUTERS/Loren Elliott SEARCH "INTERNATIONAL STUDENTS AUSTRALIA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Maggie Zhang and her boyfriend Sunny Gu, international students from China both studying for a Masters in Commerce at the University of Sydney, walk towards the security checkpoint at Kingsford Smith International Airport, before catching a flight to China, where they are moving back home to, during the coronavirus disease (COVID-19) outbreak, in Sydney, Australia, August 12, 2020. "I definitely hope everything will be normal in 2021. My family and I are looking forward to coming back for my graduation ceremony," said Gu. REUTERS/Loren Elliott SEARCH "INTERNATIONAL STUDENTS AUSTRALIA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Police officers check a woman's quarantine pass at a checkpoint placed amid the reimposed strict lockdown to curb coronavirus disease (COVID-19) infections, in Manila, Philippines, August 17, 2020. REUTERS/Eloisa Lopez

A police officer checks a bicycle rider's quarantine pass at a checkpoint placed amid the reimposed strict lockdown to curb coronavirus disease (COVID-19) infections, in Manila, Philippines, August 17, 2020. REUTERS/Eloisa Lopez

People, including workers of the Minsk Automobile Plant (MAZ), walk out of an entrance checkpoint during an opposition demonstration to protest against presidential election results in Minsk, Belarus August 17, 2020. REUTERS/Vasily Fedosenko

People, including workers of the Minsk Automobile Plant (MAZ), walk out of an entrance checkpoint during an opposition demonstration to protest against presidential election results in Minsk, Belarus August 17, 2020. REUTERS/Vasily Fedosenko

People, including workers of the Minsk Automobile Plant (MAZ), walk out of an entrance checkpoint during an opposition demonstration to protest against presidential election results in Minsk, Belarus August 17, 2020. REUTERS/Vasily Fedosenko

People, including workers of the Minsk Automobile Plant (MAZ), walk out of an entrance checkpoint during an opposition demonstration to protest against presidential election results in Minsk, Belarus August 17, 2020. REUTERS/Vasily Fedosenko

People, including workers of the Minsk Automobile Plant (MAZ), walk out of an entrance checkpoint during an opposition demonstration to protest against presidential election results in Minsk, Belarus August 17, 2020. REUTERS/Vasily Fedosenko

New York City Sheriffs work at a COVID-19 checkpoint to randomly stop drivers entering the city, in Staten Island, New York, U.S., August 14, 2020. REUTERS/Brendan McDermid

New York City Sheriff stops an out of state car at a COVID-19 checkpoint in Staten Island, New York, U.S., August 14, 2020. REUTERS/Brendan McDermid

New York City Sheriffs work at a COVID-19 checkpoint to randomly stop drivers entering the city, in Staten Island, New York, U.S., August 14, 2020. REUTERS/Brendan McDermid

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

An opposition supporter carrying a flag is seen through an entrance checkpoint during a gathering of employees of Minsk Automobile Plant (MAZ) to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko

Employees of Minsk Automobile Plant (MAZ) are seen through an entrance checkpoint during a gathering to protest against presidential election results and to demand re-election in Minsk, Belarus August 14, 2020. REUTERS/Vasily Fedosenko