Abu Ghazl, a 53-year-old internally displaced man, sits inside his tent at a makeshift camp erected in a cemetery, as authorities around the world impose various guidelines on lockdowns and social distancing to curb the spread of coronavirus disease (COVID-19), in Maarat Misrin, an opposition-held northern Idlib town, Syria May 22, 2020. When asked, what will you miss most about being in lockdown? Abu Ghazl replied: "I wont miss anything after the lockdown because our situation will remain the same. Send us back to our home and we will self quarantine there as much as you want". Picture taken May 22, 2020. REUTERS/Khalil Ashawi

A combination picture shows Abu Ghazl, a 53-year-old internally displaced man, sitting inside his tent and a view of graves from his tent, at a makeshift camp erected in a cemetery, as authorities around the world impose various guidelines on lockdowns and social distancing to curb the spread of coronavirus disease (COVID-19), in Maarat Misrin, an opposition-held northern Idlib town, Syria, May 22, 2020. When asked, what will you miss most about being in lockdown? Abu Ghazl replied: "I wont miss anything after the lockdown because our situation will remain the same. Send us back home and we will self quarantine there as much as you want". Picture taken May 22, 2020. REUTERS/Khalil Ashawi

Graves are seen from the tent of Abu Ghazl, a 53-year-old internally displaced man, at a makeshift camp erected in a cemetery, as authorities around the world impose various guidelines on lockdowns and social distancing to curb the spread of coronavirus disease (COVID-19), in Maarat Misrin, an opposition-held northern Idlib town, Syria, May 22, 2020. Picture taken May 22, 2020. REUTERS/Khalil Ashawi

The Rolling Thunder souvenir stand near the Lincoln Memorial is closed due to concerns about the coronavirus disease (COVID-19) in Washington, U.S., May 25, 2020. REUTERS/Erin Scott

Masked visitors to the Vietnam Memorial pay respects in Washington, U.S., May 25, 2020. REUTERS/Erin Scott

Flowers lay near crosses during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Final preparations prior a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

A worker disinfects the lectern after a speaker during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

A worker disinfects the lectern after a speaker during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

A worker disinfects the lectern after a speaker during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Crosses are seen during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch and U.S. flags are seen during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

F-16 fighter jets of the Royal Netherlands Air Force perform a flyover during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch and U.S. flags are seen during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch and U.S. flags are seen at half-mast a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

U.S. ambassador Peter Hoekstra attends a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander attends a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander attends a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander attends a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

Dutch King Willem-Alexander and U.S. ambassador Peter Hoekstra attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Marcel Van Hoorn/Pool via REUTERS

View of the Netherlands American Cemetery and Memorial prior to a wreath laying ceremony commemorating over 10,000 U.S. Second World War military dead, buried or remembered, in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, second left, and U.S. ambassador Peter Hoekstra, left, talk to a family who adopted a grave after a wreath laying ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

A worker disinfects the lectern after a speaker during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, center, and U.S. ambassador Peter Hoekstra, to his left, look up at F-16 fighter jets of the Royal Netherlands Air Force who perform a flyover during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, right, leads before U.S. ambassador Peter Hoekstra, and other dignitaries as they leave after a wreath laying ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, center, and U.S. ambassador Peter Hoekstra, to his left, are seen as F-16 fighter jets of the Royal Netherlands Air Force perform a flyover during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, center, and U.S. ambassador Peter Hoekstra, to his left, are seen as F-16 fighter jets of the Royal Netherlands Air Force perform a flyover during a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander and dignitaries attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander and dignitaries attend a ceremony commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander walks back after laying a wreath commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander, center, and U.S. ambassador Peter Hoekstra, to his left, observe a moment of silence with other dignitaries, commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Dutch King Willem-Alexander observes a moment of silence commemorating over 10,000 U.S. Second World War military dead buried or remembered at the Netherlands American Cemetery and Memorial in Margraten, Netherlands May 24, 2020. Coronavirus restrictions forced the closure of the cemetery in Margraten and the ceremony was held without the general public. Peter Dejong/Pool via REUTERS

Members of the U.S. Army Old Guard place small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

Members of the U.S. Army Old Guard place small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard member carries small American flags to place in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard member holds small American flags to put in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

Members of the U.S. Army Old Guard place small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

Members of the U.S. Army Old Guard place small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard soldier inspects a small American flag before placing it in front of a headstone of a U.S. service member buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard soldier places small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard soldier inspects a small American flag before placing it in front of a headstone of a U.S. service member buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard soldier holds his hand up before receiving a small American Flag to place at a U.S. service member's headstone at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

U.S. Army Old Guard soldiers place small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A U.S. Army Old Guard soldier walks before placing small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

In advance of Memorial Day, U.S. Army Old Guard soldiers place small American flags in front of some of the more than 240,000 headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

U.S. Army Old Guard soldiers walk before placing small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

U.S. Army Old Guard soldiers walk before placing small American flags in front of the headstones of U.S. service members buried at Arlington National Cemetery in Arlington, Virginia, U.S., May 21, 2020. REUTERS/Tom Brenner

A serviceman of the self-proclaimed Donetsk People's Republic (DNR) fires a howitzer during a military exercise at a target range outside the town of Horlivka (Gorlivka), Ukraine May 21, 2020. REUTERS/Alexander Ermochenko

A serviceman of the self-proclaimed Donetsk People's Republic (DNR) stands next to Grad multiple rocket launcher systems during military exercises at a target range outside the town of Horlivka (Gorlivka), Ukraine May 21, 2020. REUTERS/Alexander Ermochenko