Pope Francis greets people after holding the weekly general audience at the Vatican, October 27, 2021. REUTERS/Yara Nardi

Pope Francis greets a man after holding the weekly general audience at the Vatican, October 27, 2021. REUTERS/Yara Nardi

U. S. President Joe Biden greets supporters as he campaigns for Democratic candidate for governor of Virginia Terry McAuliffe at a rally in Arlington, Virginia, U. S. October 26, 2021. REUTERS/Jonathan Ernst

Democratic candidate for governor of Virginia Terry McAuliffe gives a thumbs-up as U. S. President Joe Biden greets people at a McAuliffe campaign rally in Arlington, Virginia, U. S. October 26, 2021. REUTERS/Jonathan Ernst

U. S. President Joe Biden and Democratic candidate for governor of Virginia Terry McAuliffe greet each other onstage at a rally in Arlington, Virginia, U.S. October 26, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden and Democratic candidate for governor of Virginia Terry McAuliffe greet each other onstage at a rally in Arlington, Virginia, U.S. October 26, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden and Democratic candidate for governor of Virginia Terry McAuliffe greet each other onstage at a rally in Arlington, Virginia, U.S. October 26, 2021. REUTERS/Jonathan Ernst

French President Emmanuel Macron greets former President of the Representative Council of Jewish Institutions in France (CRIF) Francis Kalifat, at the Emile Zola house in Medan, near Paris, October 26, 2021. Ludovic MARIN/Pool via REUTERS?

French President Emmanuel Macron greets president of the Maison Zola-Musee Dreyfus association Louis Gautier at the Emile Zola house in Medan, near Paris, October 26, 2021. Ludovic MARIN/Pool via REUTERS?

French President Emmanuel Macron greets President of the Council of Jewish Communities of Hauts-de-Seine Elie Korchia, at the Emile Zola house in Medan, near Paris, October 26, 2021. Ludovic MARIN/Pool via REUTERS

French President Emmanuel Macron greets Paris' Ile de France president and candidate to the French right-wing Les Republicains primary election Valerie Pecresse at the Emile Zola house in Medan, near Paris, on October 26, 2021. Ludovic MARIN/Pool via REUTERS

Canada's Prime Minister Justin Trudeau greets Deputy Prime Minister and Minister of Finance Chrystia Freeland during the swearing-in ceremony of his new cabinet at Rideau Hall in Ottawa, Ontario, Canada October 26, 2021. REUTERS/Blair Gable

French President Emmanuel Macron, flanked by his wife Brigitte Macron and President of the Maison Zola-Musee Dreyfus association Louis Gautier, greets late French writer and journalist Emile Zola's great-granddaughter Martine Le Blond-Zola, during his arrival at the Emile Zola house in Medan, near Paris, October 26, 2021. Ludovic MARIN/Pool via REUTERS

U.S. first lady Jill Biden greets military members and their families during a gathering at Joint Base Charleston in North Charleston, South Carolina, U.S., October 25, 2021. REUTERS/Randall Hill

U.S. first lady Jill Biden greets military members and their families during a gathering at Joint Base Charleston in North Charleston, South Carolina, U.S., October 25, 2021. REUTERS/Randall Hill

U.S. first lady Jill Biden greets cancer survivor LaToya Wilson at the MUSC Hollings Cancer Center in Charleston, South Carolina, U.S., October 25, 2021. REUTERS/Randall Hill

Pope Francis greets a person during the meeting for the ecumenical pilgrimage to Rome, at the Paul VI Audience Hall, in the Vatican, October 25, 2021. REUTERS/Guglielmo Mangiapane

Pope Francis greets a person during the meeting for the ecumenical pilgrimage to Rome, at the Paul VI Audience Hall, in the Vatican, October 25, 2021. REUTERS/Guglielmo Mangiapane

Primary students are greeted by the school mascot as they return to the Abbotsford Public School campus for in-person learning, following an extended coronavirus disease (COVID-19) lockdown, in Sydney, Australia, October 25, 2021. REUTERS/Loren Elliott

Primary students are greeted by the school mascot as they return to the Abbotsford Public School campus for in-person learning, following an extended coronavirus disease (COVID-19) lockdown, in Sydney, Australia, October 25, 2021. REUTERS/Loren Elliott

U.S. first lady Jill Biden claps after the Chippewa tribe members then perform a traditional ceremonial greet featuring dancing, singing and drums upon her arrival to the Ziibiwing Center for a listening session event regarding mental health in Mount Pleasant, Michigan, U.S., October 24, 2021. REUTERS/Emily Elconin

U.S. first lady Jill Biden and U.S. Surgeon General Vivek H. Murthy watch as Chippewa tribe members perform traditional ceremonial greet featuring dancing, singing and drums as they arrive to the Ziibiwing Center for a listening session event regarding mental health in Mount Pleasant, Michigan, U.S., October 24, 2021. REUTERS/Emily Elconin

Brazil's President Jair Bolsonaro greets Economy Minister Paulo Guedes during a news conference at the Ministry of Economy headquarters in Brasilia, Brazil, October 22, 2021. REUTERS/Ueslei Marcelino

Chilean presidential candidate Gabriel Boric from left-wing 'Apruebo Dignidad' (I Approve Dignity) greets a child while meeting with supporters during the start of the allowed period for televised electoral propaganda in Santiago, Chile October 22, 2021. Chileans will go to the polls in the first round of presidential elections on November 21, 2021. REUTERS/Ivan Alvarado

Britain's Prime Minister Boris Johnson greets 88-year-old Nitza Sarner while she waits to receive a pfizer booster vaccination as he visits at a COVID-19 vaccination centre at Little Venice Sports Centre, in London, Britain October 22, 2021. Matt Dunham/Pool via REUTERS

Britain's Prime Minister Boris Johnson greets a boy as he visits a COVID-19 vaccination centre at Little Venice Sports Centre, in London, Britain October 22, 2021. Matt Dunham/Pool via REUTERS

Britain's Prime Minister Boris Johnson greets people as he visits a COVID-19 vaccination centre at Little Venice Sports Centre, in London, Britain October 22, 2021. Matt Dunham/Pool via REUTERS

Britain's Prime Minister Boris Johnson greets staff as he visits a COVID-19 vaccination centre at Little Venice Sports Centre, in London, Britain October 22, 2021. Matt Dunham/Pool via REUTERS

Britain's Prime Minister Boris Johnson greets people as he visits a COVID-19 vaccination centre at Little Venice Sports Centre, in London, Britain October 22, 2021. Matt Dunham/Pool via REUTERS

Portugal's Prime Minister Antonio Costa greets Cypriot President Nicos Anastasiades during a round table meeting at the EU summit in Brussels, Belgium, October 22, 2021. Olivier Matthys/ Pool via REUTERS

France's President Emmanuel Macron greets Hungary's Prime Minister Viktor Orban on the second day of the EU leaders summit, in Brussels, Belgium, October 22, 2021. John Thys/Pool/via REUTERS

U.S. President Joe Biden greets attendees during a break in a town hall about his infrastructure investment proposals with CNN's Anderson Cooper at the Baltimore Center Stage Pearlstone Theater in Baltimore, Maryland, U.S. October 21, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden greets attendees during a break in a town hall about his infrastructure investment proposals with CNN's Anderson Cooper at the Baltimore Center Stage Pearlstone Theater in Baltimore, Maryland, U.S. October 21, 2021. REUTERS/Jonathan Ernst

Canada's Prime Minister Justin Trudeau looks on during a tour and meet-and-greet with doctors at the Children's Hospital of Eastern Ontario, in Ottawa, Canada October 21, 2021. Sean Kilpatrick/Pool via REUTERS

United States Defence Secretary Lloyd J. Austin III, right, greets Denmark’s Defence Minister Trine Bramsen prior to a bilateral meeting at NATO headquarters in Brussels, Thursday, Oct. 21, 2021. Virginia Mayo/Pool via REUTERS

United States Defense Secretary Lloyd J. Austin III greets Spain’s Defense Minister Margarita Robles prior to a bilateral meeting at NATO headquarters in Brussels, Belgium October 21, 2021. Virginia Mayo/Pool via REUTERS

European Council President Charles Michel greets Spain’s Prime Minister Pedro Sanchez prior to a meeting at an EU summit in Brussels, Belgium, October 21, 2021. Francois Walschaerts/ Pool via REUTERS

European Council President Charles Michel greets Spain’s Prime Minister Pedro Sanchez prior to a meeting at an EU summit in Brussels, Belgium, October 21, 2021. Francois Walschaerts/ Pool via REUTERS

European Council President Charles Michel greets Spain’s Prime Minister Pedro Sanchez prior to a meeting at an EU summit in Brussels, Belgium October 21, 2021. Francois Walschaerts/ Pool via REUTERS

European Council President Charles Michel greets Spain’s Prime Minister Pedro Sanchez prior to a meeting at an EU summit in Brussels, Belgium, October 21, 2021. Francois Walschaerts/ Pool via REUTERS

U.S. President Joe Biden greets attendees after his remarks on infrastructure legislation at the Electric City Trolley Museum in Scranton, Pennsylvania, U.S. October 20, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden greets attendees after delivering remarks on infrastructure legislation at the Electric City Trolley Museum in Scranton, Pennsylvania, U.S. October 20, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden greets attendees after delivering remarks on infrastructure legislation at the Electric City Trolley Museum in Scranton, Pennsylvania, U.S. October 20, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden greets supporters after delivering remarks on infrastructure legislation at the Electric City Trolley Museum in Scranton, Pennsylvania, U.S. October 20, 2021. REUTERS/Jonathan Ernst

U.S. President Joe Biden greets supporters at the Electric City Trolley Museum in Scranton, Pennsylvania, U.S. October 20, 2021. REUTERS/Jonathan Ernst

Brazil's President Jair Bolsonaro greets President of Brazil's Supreme Federal Court Luiz Fux during a ceremony to sanction the bill that create the Federal Regional Court, at the Planalto Palace in Brasilia, Brazil October 20, 2021. REUTERS/Ueslei Marcelino

Annika Dworet greets someone in an adjacent row in court before Nikolas Cruz's guilty plea at Broward County Courthouse in Fort Lauderdale, Florida, U.S., October 20, 2021. Cruz pleaded guilty on all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida. Dworet's son, Nicholas Dworet, 17, was among those killed. Amy Beth Bennett/Pool via REUTERS

A combination picture shows a boy trying to take Pope Francis' white papal skullcap as he greets him during the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

A boy greets Pope Francis during the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

A boy greets Pope Francis during the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

A boy approaches Pope Francis to greet him during the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

A boy greets Pope Francis during the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

Pope Francis greets people as he arrives for the weekly general audience at the Vatican, October 20, 2021. REUTERS/Remo Casilli

U.S. Secretary of State Antony Blinken attends a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken attends a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken speaks during a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken speaks during a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken speaks during a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken speaks during a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool

U.S. Secretary of State Antony Blinken speaks during a meet and greet event with personnel of the U.S Embassy in Ecuador, in Quito, Ecuador October 19, 2021. REUTERS/Santiago Arcos/Pool