A diver cleans a tank in SEA LIFE Centre as it prepares to reopen, as coronavirus disease (COVID-19) restrictions continue to ease, in London, Britain, May 14, 2021. REUTERS/Peter Cziborra

Divers hold up signs in SEA LIFE Centre as it prepares to reopen, as coronavirus disease (COVID-19) restrictions continue to ease, in London, Britain, May 14, 2021. REUTERS/Peter Cziborra

Members of Israeli police walk as Palestinians protest over tension in Jerusalem and Israel-Gaza escalation, in Hebron in the Israeli-occupied West Bank, May 14, 2021. REUTERS/Mussa Qawasma

Shooting - ISSF World Cup Shotgun - Lonato, Italy - May 14, 2021 France's Melanie Couzy in action during the Trap Women qualification REUTERS/Massimo Pinca

People take part in a protest against home evictions at CaixaBank headquarters in Madrid, Spain May 14, 2021. The banner reads: "Caixabank evicts" REUTERS/Susana Vera

People take part in a protest against home evictions at CaixaBank headquarters in Madrid, Spain May 14, 2021. REUTERS/Susana Vera

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal reacts after falling during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal reacts after falling during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Palestinian demonstrators react during a protest over tension in Jerusalem and Israel-Gaza escalation, in Hebron in the Israeli-occupied West Bank, May 14, 2021. REUTERS/Mussa Qawasma

A Palestinian demonstrator uses a slingshot to hurl stones at Israeli forces during a protest over tension in Jerusalem and Israel-Gaza escalation, in Hebron in the Israeli-occupied West Bank, May 14, 2021. REUTERS/Mussa Qawasma

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta speaks at the Barca Cafe inauguration REUTERS/Albert Gea

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta cuts the ribbon at the Barca Cafe inauguration REUTERS/Albert Gea

A person receives a vaccine against the coronavirus disease (COVID-19) at a sports hall in Berlin, Germany, May 14, 2021. REUTERS/Axel Schmidt

A woman receives a vaccine against the coronavirus disease (COVID-19) at a sports hall in Berlin, Germany, May 14, 2021. REUTERS/Axel Schmidt

A soldier helps out as vaccinations against the coronavirus disease (COVID-19) take place at a sports hall in Berlin, Germany, May 14, 2021. REUTERS/Axel Schmidt

A woman receives a vaccine against the coronavirus disease (COVID-19) at a sports hall in Berlin, Germany, May 14, 2021. REUTERS/Axel Schmidt

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta speaks at the Barca Cafe inauguration REUTERS/Albert Gea

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta at the Barca Cafe inauguration REUTERS/Albert Gea

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta wearing a mask at the Barca Cafe inauguration REUTERS/Albert Gea

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta wearing a mask at the Barca Cafe inauguration REUTERS/Albert Gea

Britain's Prince Charles visits BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 The microphone is disinfected as FC Barcelona president Joan Laporta waits to speak at the Barca Cafe inauguration REUTERS/Albert Gea

Britain's Prince Charles arrives for a visit to BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince Charles visits BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince Charles visits BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince Charles arrives for a visit to BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince Charles arrives for a visit to BCB International, a supplier of protective, medical and defence equipment, in Cardiff, Wales, Britain May 14, 2021. Chris Jackson/Pool via REUTERS

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

A host works at London Eye in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in London, Britain, May 14, 2021. REUTERS/Peter Cziborra

A host cleans a pod of London Eye in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in London, Britain, May 14, 2021. REUTERS/Peter Cziborra

Hosts clean a pod of London Eye in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in London, Britain, May 14, 2021. REUTERS/Peter Cziborra

COP26 President Alok Sharma speaks with ScottishPower Renewables Chief Executive Lindsay McQuade, during an event at Whitelee Windfarm, marking six months until the U.N. Climate Change Conference, outside Glasgow, Scotland, Britain, May 14, 2021. REUTERS/Russell Cheyne/Pool

Staff members work at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

Staff members work at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

Soccer Football - FC Barcelona president Joan Laporta speaks at Barca Cafe inauguration - Camp Nou, Barcelona, Spain - May 14, 2021 FC Barcelona president Joan Laporta wearing a mask at the Barca Cafe inauguration REUTERS/Albert Gea

Staff members work at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

COP26 President Alok Sharma gestures next to Emma Khadeh and her winning art competition piece, during an event at Whitelee Windfarm, marking six months until the U.N. Climate Change Conference, outside Glasgow, Scotland, Britain, May 14, 2021. REUTERS/Russell Cheyne/Pool

A staff member works at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

A view of the Parthenon temple atop the Acropolis hill as a passenger ferry sails in the background, a day before the official opening of the tourist season, in Athens, Greece, May 14, 2021. REUTERS/Vassilis Triandafyllou

A staff member works at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

A staff member works at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

Staff members work at Royal & Derngate theatre in preparation to reopen as coronavirus disease (COVID-19) restrictions continue to ease, in Northampton, Britain, May 14, 2021. REUTERS/Andrew Boyers

Shooting - ISSF World Cup Shotgun - Lonato, Italy - May 14, 2021 Czech Republic's Lea Kucerova in action during the Trap Women qualification REUTERS/Massimo Pinca

COP26 President Alok Sharma gestures next to Emma Khadeh, winner of an art competition, during an event at Whitelee Windfarm, marking six months until the U.N. Climate Change Conference, outside Glasgow, Scotland, Britain, May 14, 2021. REUTERS/Russell Cheyne/Pool

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Germany's Alexander Zverev in action during his quarter final match against Spain's Rafael Nadal REUTERS/Guglielmo Mangiapane

Shooting - ISSF World Cup Shotgun - Lonato, Italy - May 14, 2021 Italy's Jessica Rossi in action during the Trap Women qualification REUTERS/Massimo Pinca

A man wearing a protective face mask walks next to wall decorations of Tokyo 2020 Olympic Games that have been postponed to 2021 due to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura

A man wearing a protective face mask walks by an advertising of Tokyo 2020 Olympic Games that have been postponed to 2021 due to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura

Passersby wearing protective face masks walk near a countdown clock of Tokyo 2020 Olympic Games that have been postponed to 2021 due to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura

A Palestinian boy sits on debris at the site of destroyed houses in the aftermath of Israeli air and artillery strikes as cross-border violence between the Israeli military and Palestinian militants continues, in the northern Gaza Strip May 14, 2021. REUTERS/Mohammed Salem

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

A Palestinian woman walks as she collects her belongings inside her damaged house in the aftermath of Israeli air and artillery strikes as cross-border violence between the Israeli military and Palestinian militants continues, in the northern Gaza Strip May 14, 2021. REUTERS/Mohammed Salem

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Germany's Alexander Zverev in action during his quarter final match against Spain's Rafael Nadal REUTERS/Guglielmo Mangiapane

Palestinian women walk at the site of destroyed houses in the aftermath of Israeli air and artillery strikes as cross-border violence between the Israeli military and Palestinian militants continues, in the northern Gaza Strip May 14, 2021. REUTERS/Mohammed Salem

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Spain's Rafael Nadal in action during his quarter final match against Germany's Alexander Zverev REUTERS/Guglielmo Mangiapane

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - May 14, 2021 Germany's Alexander Zverev in action during his quarter final match against Spain's Rafael Nadal REUTERS/Guglielmo Mangiapane

A man wearing a protective face mask walks by an advertising of Tokyo 2020 Olympic Games that have been postponed to 2021 due to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura