A Swiss Guard keeps watch on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

Police officers wearing face masks stand guard during a protest against the Swiss government's measures to slow down the spread of the coronavirus disease (COVID-19), in Zurich, Switzerland, May 16, 2020. REUTERS/Arnd Wiegmann

Police officers stand guard while a demonstrator is detained during a protest against the Swiss government's measures to slow down the spread of the coronavirus disease (COVID-19), in Zurich, Switzerland, May 16, 2020. REUTERS/Arnd Wiegmann

Swiss guard members wear protective face masks, during the spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

Two Swiss guards wearing protective face masks stand guard at the Vatican's entrance, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

A Swiss guard wearing a protective face mask stands guard at the Vatican's entrance, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

A Swiss guard wearing a protective face mask speaks with a woman wearing a protective face mask and a protective face shield, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

A Swiss guard wearing a protective face mask gestures as he stands guard, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

Two Swiss guards wearing protective face masks stand guard at the Vatican's entrance, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

Two Swiss guards wearing protective face masks stand guard, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

A Swiss guard wearing a protective face mask stands guard at the Vatican's entrance, as Italy begins a staged end to a nationwide lockdown due to the spread of the coronavirus disease (COVID-19), at the Vatican, May 4, 2020. REUTERS/Remo Casilli

A police officer guards cargo of masks imported by the Chinese-Swiss Chamber of Congress and the Geneva Chamber of Commerce, intended for local hospitals and medical need amid the coronavirus (COVID-19) disease outbreak, at Cointrin airport in Geneva, April 6, 2020. REUTERS/Denis Balibouse

A police officer guards cargo of masks imported by the Chinese-Swiss Chamber of Congress and the Geneva Chamber of Commerce, intended for local hospitals and medical need amid the coronavirus (COVID-19) disease outbreak, at Cointrin airport in Geneva, April 6, 2020. REUTERS/Denis Balibouse

A police officer guards cargo of masks imported by the Chinese-Swiss Chamber of Congress and the Geneva Chamber of Commerce, intended for local hospitals and medical need amid the coronavirus (COVID-19) disease outbreak, at Cointrin airport in Geneva, April 6, 2020. REUTERS/Denis Balibouse

Cars drive past a Swiss border guard at the Swiss-Italian border in Ponte Tresa, Switzerland February 24, 2020. REUTERS/Arnd Wiegmann

Cars drive past Swiss border guards at the Swiss-Italian border in Ponte Tresa, Switzerland February 24, 2020. REUTERS/Arnd Wiegmann

A Swiss border guard checks a car at the Swiss-Italian border in Ponte Tresa, Switzerland February 24, 2020. REUTERS/Arnd Wiegmann

A member of Swiss Guards looks on ahead of the weekly general audience held by Pope Francis at the Vatican, January 22, 2020. REUTERS/Yara Nardi TPX IMAGES OF THE DAY

Swiss riot police officers stand guard in front a branch of Swiss bank UBS as left-wing protestors march past during a demonstration against the upcoming World Economic Forum Davos (WEF) meeting in Bern, Switzerland January 18, 2020. The banner reads "Worldwide resistance unified in class struggle" REUTERS/Arnd Wiegmann

Swiss riot police officers stand guard in front of the Bundeshaus, the seat of the federal parliament, during a demonstration against the upcoming World Economic Forum Davos (WEF) meeting in Bern, Switzerland January 18, 2020. REUTERS/Arnd Wiegmann

Swiss riot police officers stand guard in front of the Bundeshaus, the seat of the federal parliament, during a demonstration against the upcoming World Economic Forum Davos (WEF) meeting in Bern, Switzerland Januar 18, 2020. REUTERS/Arnd Wiegmann

Swiss guards stand as Pope Francis attends an audience for the traditional exchange of New Year greetings, in the Sala Regia state hall at the Vatican, January 9, 2020. REUTERS/Remo Casilli/Pool

A member of the Swiss Guard is seen ahead of the Vespers and Te Deum prayer led by Pope Francis in Saint Peter's Basilica at the Vatican, December 31, 2019. REUTERS/Yara Nardi

Members of the Swiss Guard are seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

A member of the Swiss Guard is seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

Members of the Swiss Guard are seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

A member of the Swiss Guard is seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

A member of the Swiss Guard is seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi TPX IMAGES OF THE DAY

A member of the Swiss Guard is seen in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

A member of the Swiss Guard is seen next to a statue in the St. Peter's Square at the Vatican, December 25, 2019. REUTERS/Yara Nardi

A member of the Swiss Guard is seen ahead of Pope Francis' arrival to lead a special audience to deliver a Christmas message to Vatican workers at the Paul VI Hall at the Vatican, December 21, 2019. REUTERS/Guglielmo Mangiapane

A Swiss Guard is pictured at the Vatican, December 14, 2019. REUTERS/Yara Nardi/Pool

A Swiss Guard stands during the Pope's private audience with Slovakia's Prime Minister in the Apostolic Palace at the Vatican, December 9, 2019. Tiziana Fabi/Pool via REUTERS

Members of the Hundred Swiss guards wearing traditional uniforms attend a session in the Swiss Parliament Building (Bundeshaus) in Bern, Switzerland December 2, 2019. REUTERS/Arnd Wiegmann

Swiss Guard are silhouetted during the changing of the guard at the Bronze Door, before Pope Francis' private audience with Lithuanian President Gitanas Nauseda at the Vatican, November 8, 2019. Alessandra Tarantino/Pool via REUTERS

A Swiss Guard patrols during a Mass led by Pope Francis to open a three-week synod of Amazonian bishops at the Vatican, October 6, 2019. REUTERS/Remo Casilli

A Swiss Guard is seen ahead of consistory at Saint Peter's Basilica at the Vatican, October 5, 2019. REUTERS/Yara Nardi

A Swiss Guard waits in the Sala Regia state hall before the arrival of U.S. Secretary of State Mike Pompeo for a private visit following the launch of a Vatican - U.S. Symposium on Faith-Based Organizations (FBOs), in the Vatican, October 2, 2019. Andreas Solaro/Pool via REUTERS

U.S. Secretary of State Mike Pompeo walks past a Swiss Guard as he enters the Sala Regia state hall during a private visit following the launch of a Vatican - U.S. Symposium on Faith-Based Organizations (FBOs), in the Vatican, October 2, 2019. Andreas Solaro/Pool via REUTERS

Nuns walk next to a member of the Swiss Guard during the weekly general audience at the Vatican, September 25, 2019. REUTERS/Remo Casilli

A Swiss Guard patrols during the weekly general audience led by Pope Francis at the Vatican, September 11, 2019. REUTERS/Remo Casilli

Priests walk past Swiss guards during the vigil led by Pope Francis ahead of Pentecost Sunday at the Vatican, June 8, 2019. Picture taken with long exposure. REUTERS/Remo Casilli

A Swiss guard looks on as Pope Francis holds the weekly general audience at the Vatican, June 5, 2019. REUTERS/Remo Casilli

A Swiss guard looks on as Pope Francis holds the weekly general audience at the Vatican, June 5, 2019. REUTERS/Remo Casilli

A Swiss guard looks on as Pope Francis holds the weekly general audience at the Vatican, June 5, 2019. REUTERS/Remo Casilli

A Swiss guard patrols during the the weekly general audience in the Vatican, May 22, 2019. REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli TPX IMAGES OF THE DAY

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

Saint Peter's Square is seen from the Saint Damaso terrace, during the swearing-in ceremony of the new recruits of the Vatican’s elite Swiss Guard at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

One of the new recruits of the Vatican’s elite Swiss Guard attends the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

Commander of the Swiss Guard Christoph Graf looks at the new recruits of the Vatican’s elite Swiss Guard during the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard attend the swearing-in ceremony at the Vatican, May 6, 2019 REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard prepare for the swearing-in ceremony at the Vatican, May 6, 2019 . REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard prepare for the swearing-in ceremony at the Vatican, May 6, 2019 . REUTERS/Remo Casilli

New recruits of the Vatican’s elite Swiss Guard prepare for the swearing-in ceremony at the Vatican, May 6, 2019 . REUTERS/Remo Casilli

The Swiss Guard band plays ahead of the swearing-in ceremony for new recruits of the Vatican’s elite Swiss Guard at the Vatican, May 6, 2019. REUTERS/Remo Casilli