A soldier sits on one of the trucks used to bring back the girls who were kidnapped from a boarding school in the northwest Nigerian state of Zamfara, following their release in Zamfara, Nigeria, March 2, 2021. REUTERS/Afolabi Sotunde

U.S. National Guard soldiers patrol outside the Hart Senate Office Building near the U.S. Capitol in Washington, U.S., March 1, 2021. REUTERS/Jonathan Ernst

Soldiers guard an aircraft carrying the first batch of doses of the Sinopharm vaccine against the coronavirus disease (COVID-19) after it arrived at Baghdad International Airport, in Baghdad, Iraq March 2, 2021. REUTERS/Khalid al-Mousily REFILE - CORRECTING VACCINE

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi soldiers carry their weapons as they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi soldiers, wearing protective face masks, carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi woman soldier gets ready for a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi woman soldier, with henna dyed patterns on her hands, carries a weapon during a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers get ready for a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi soldiers carry their weapons as they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Myanmar soldiers from the 77th light infantry division walk along a street during a protest against the military coup in Yangon, Myanmar, February 28, 2021. Picture taken February 28, 2021. REUTERS/Stringer

Myanmar soldiers from the 77th light infantry division walk along a street during a protest against the military coup in Yangon, Myanmar, February 28, 2021. Picture taken February 28, 2021. REUTERS/Stringer

Myanmar soldiers from the 77th light infantry division walk along a street during a protest against the military coup in Yangon, Myanmar, February 28, 2021. Picture taken February 28, 2021. REUTERS/Stringer

Soldiers ride on the back of a patrol truck during the burial of Brigadier General Abdul-Ghani Shaalan, Commander of the Special Security Forces in Marib who was killed in recent fighting with Houthi fighters in Marib, Yemen February 28, 2021. REUTERS/Ali Owidha

Soldiers recite prayers next to the grave of Brigadier General Abdul-Ghani Shaalan, Commander of the Special Security Forces in Marib who was killed in recent fighting with Houthi fighters, in Marib, Yemen February 28, 2021. REUTERS/Ali Owidha

Soldiers recite prayers next to the grave of Brigadier General Abdul-Ghani Shaalan, Commander of the Special Security Forces in Marib who was killed in recent fighting with Houthi fighters in Marib, Yemen February 28, 2021. REUTERS/Ali Owidha

Myanmar soldiers walk along a street during a protest against the military coup in Yangon, Myanmar, February 28, 2021. REUTERS/Stringer

A soldier guards the area where eleven people were killed when unidentified gunmen riding in a truck opened fire in Tonala, State of Jalisco, Mexico February 27, 2021. REUTERS/Fernado Carranza

A soldier guards the area where eleven people were killed when unidentified gunmen riding in a truck opened fire in Tonala, State of Jalisco, Mexico February 27, 2021. REUTERS/Fernado Carranza

A woman gestures in front of soldiers as family members of inmates stand outside a prison waiting for information about their loved ones after gangs fought one another with handmade weapons in what authorities said was a coordinated outbreak of violence, in Guayaquil, Ecuador February 26, 2021. REUTERS/Santiago Arcos

U.S. National Guard soldiers look up into the Capitol Rotunda during a guided tour on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

United States National Guard soldiers walk past a U.S. Capitol Police Officer on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

A United States Capitol Police Officer stands guard along the steps to the House of Representatives on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

United States National Guard soldiers walk past the U.S. Capitol in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

A U.S. Capitol Police Officer stands guard on the steps of the House of Representatives on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

United States Capitol Police Officers stand guard along the steps of the U.S. Senate on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

United States National Guard soldiers walk down a stairway outside of the Capitol Visitor Center on Capitol Hill in Washington, U.S., February 25, 2021. REUTERS/Tom Brenner

A mural depicting a soldier is seen in a wall of an abandoned building inside the UN-controlled buffer zone in Nicosia, Cyprus February 25, 2021. REUTERS/Yiannis Kourtoglou

A soldier stands outside Santa Maria degli Angeli church before the funeral of the Italian ambassador Luca Attanasio and his bodyguard Vittorio Iacovacci, who were killed in an attack in the Democratic Republic of Congo, in Rome, Italy, February 25, 2021. REUTERS/Yara Nardi

Soldiers get on a truck outside a prison as authorities try to control another riot, in Guayaquil, Ecuador February 25, 2021. REUTERS/Santiago Arcos REFILE - QUALITY REPEAT

Soldiers sit on a truck parked outside a prison as authorities try to control another riot, in Guayaquil, Ecuador February 25, 2021. REUTERS/Santiago Arcos

Soldiers sit on a truck parked outside a prison as authorities try to control another riot, in Guayaquil, Ecuador February 25, 2021. REUTERS/Santiago Arcos

Soldier stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 23, 2021. REUTERS/Vicente Gaibor del Pino

A soldier stands guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 24, 2021. REUTERS/Vicente Gaibor del Pino

Soldiers stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 24, 2021. REUTERS/Vicente Gaibor del Pino

A soldier walks next to a China's Sinopharm coronavirus disease (COVID-19) vaccine container at the military airport in El Alto, on the outskirts of La Paz, Bolivia, February 24, 2021. REUTERS/David Mercado

A Bolivian soldier stands next to a military aircraft with containers of China's Sinopharm coronavirus disease (COVID-19) vaccine at the military airport in El Alto, on the outskirts of La Paz, Bolivia, February 24, 2021. REUTERS/David Mercado

An Iraqi soldier walks past the entrance of St. Joseph Chaldean Cathedral, where Pope Francis will hold a mass, ahead of his planned visit to Iraq, in Baghdad, Iraq February 23, 2021. Picture taken February 23, 2021. REUTERS/Khalid al-Mousily

Soldier stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 23, 2021. REUTERS/Vicente Gaibor del Pino

Soldier stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 23, 2021. REUTERS/Vicente Gaibor del Pino

Soldier stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 23, 2021. REUTERS/Vicente Gaibor del Pino

Soldier stand guard outside a prison where inmates were killed during a riot that the government described as a concerted action by criminal organisations, in Guayaquil, Ecuador February 23, 2021. REUTERS/Vicente Gaibor del Pino

A soldier stands next to plastic containers at an area where military authorities eradicated a coca leaf plantation and dismantled a lab to process the drug, in El Porvenir, in Guerrero state, Mexico February 22, 2021. Picture taken February 22, 2021. REUTERS/Javier Verdin

A soldier keeps watch at an area where military authorities eradicated a coca leaf plantation and dismantled a lab to process the drug, in El Porvenir, in Guerrero state, Mexico February 22, 2021. Picture taken February 22, 2021. REUTERS/Javier Verdin

Soldiers stand next to plastic containers at an area where military authorities eradicated a coca leaf plantation and dismantled a lab to process the drug, in El Porvenir, in Guerrero state, Mexico February 22, 2021. Picture taken February 22, 2021. REUTERS/Javier Verdin

Soldiers keep watch at an area where military authorities eradicated a coca leaf plantation and dismantled a lab to process the drug, in El Porvenir, in Guerrero state, Mexico February 22, 2021. Picture taken February 22, 2021. REUTERS/Javier Verdin

Paraguayan soldiers stand guard near a sign that reads "Vaccination against COVID" as health workers innoculate their colleagues with Russia's Sputnik V vaccine against the coronavirus disease (COVID-19), at a hospital in Itaugua, Paraguay February 22, 2021. REUTERS/Cesar Olmedo

A visitor is reflected in a display featuring British Revolutionary-era soldiers at George Washington's Mount Vernon Estate in Mount Vernon, Virginia, U.S., February 22, 2021. REUTERS/Tom Brenner

A man wears a glove covered with tar as Israeli soldiers and volunteers clean tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, at a beach in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

Policemen ride their horses as they patrol the beach where Israeli soldiers and volunteers clean tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

An aerial view shows a pile of plastic bags on the beach as Israeli soldiers and volunteers clean tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun TPX IMAGES OF THE DAY

An aerial view shows Israeli soldiers cleaning tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, at a beach in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

Israeli soldiers clean tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, at a beach in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

Israeli soldiers clean tar from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline, at a beach in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

An Israeli soldier holds a clump of tar cleaned from the sand after an offshore oil spill drenched much of Israel's Mediterranean shoreline with tar, at a beach in Atlit, Israel February 22, 2021. REUTERS/Ronen Zvulun

Soldiers stand guard as medical staff members wait to receive the first injection with a a dose of the Sinopharm coronavirus disease (COVID-19) vaccine at the stadium Ollantaytambo in Lima, Peru February 19, 2021. REUTERS/Sebastian Castaneda

Soldiers keep watch in Cantagallo, an indigenous Shipibo-Conibo community, during the vaccination campaign against the coronavirus disease (COVID-19), in Lima, Peru February 19, 2021. REUTERS/Angela Ponce