Lina Mijok, 26, a South Sudanese returnee who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) talks during a Reuters interview at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Santino Thon Bol, 39, a South Sudanese returnee construction worker who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) talks during a Reuters interview at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Suzan William, 36, a South Sudanese returnee nurse who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) talks during a Reuters interview at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Lina Mijok, 26, a South Sudanese returnee who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) talks during a Reuters interview at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Women who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF), sit at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) receive food rations at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrive in a courtesy bus at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Women who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) queue to receive food rations at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) camp at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrive atop a truck at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to receive relief items at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) queue to collect water from a tank at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) camp at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Women and their children who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF), sit at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrive at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) receive food rations at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Children who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF), carry bags on their heads as they arrive at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Children who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF), arrive at the United Nations High Commissioner for Refugees (UNHCR) transit centre in Renk, near the border crossing point in Renk County of Upper Nile State, South Sudan May 1, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) ride on donkey carts at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) walk at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register with International Organization for Migration (IOM) at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) ride on donkey carts at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) ride on donkey carts at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) walk at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

A child is examined for malnutrition as civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun REFILE - QUALITY REPEAT TPX IMAGES OF THE DAY 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrive at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

A child is examined for malnutrition as civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

A woman who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrives to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) walk at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

A woman who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrives to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) arrive at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Children are examined for malnutrition as civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register at the United Nations High Commissioner for Refugees (UNHCR) after crossing at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) walk at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

Civilians who fled the war-torn Sudan following the outbreak of fighting between the Sudanese army and the paramilitary Rapid Support Forces (RSF) gather to register with International Organization for Migration (IOM) at the Joda South border point, in Renk County, Upper Nile state, South Sudan April 30, 2023. REUTERS/Jok Solomun 

An unhappy shareholder wears a blazer with a text on its back during Credit Suisse Annual General Meeting, two weeks after being bought by rival UBS in a government-brokered rescue, at Hallenstadion, in Zurich, Switzerland, April 4, 2023. REUTERS/Pierre Albouy 

An unhappy shareholder wears a blazer with a text on its back during Credit Suisse Annual General Meeting, two weeks after being bought by rival UBS in a government-brokered rescue, at Hallenstadion, in Zurich, Switzerland, April 4, 2023. REUTERS/Pierre Albouy 

Tesla owners unhappy with the U.S. carmaker's price cuts discuss their situation at a Tesla delivery centre in Shanghai, China January 10, 2023. REUTERS/Brenda Goh 

A police officer detains a man, after a group of students unhappy with the election results protested, as Angola's ruling party, which has been in power for nearly five decades, looked set to win a national election with a solid lead over the main opposition in Luanda, Angola, August 25, 2022. REUTERS/Siphiwe Sibeko 

An electric car is charged in Allersberg, Germany, June 29, 2022, during a trip from Hamburg to Munich, resulting in unhappiness caused by an incomplete network of charging stations and inaccurate travel time forecasts. REUTERS/Jan Schwartz 

An electric car is charged in Bernburg (Saale), Germany, June 29, 2022, during a trip from Hamburg to Munich, resulting in unhappiness caused by an incomplete network of charging stations and inaccurate travel time forecasts. REUTERS/Jan Schwartz 

A demonstrator holds a sign that reads "We wish you an unhappy birthday, Pinera. Quit!" next to a barricade during a protest against Chile's President Sebastian Pinera and his government, during Pinera's birthday, in Santiago, Chile December 1, 2020. REUTERS/Ivan Alvarado 

A demonstrator holds a sign reading "Unhappy damned birthday, coward and tyrant killer" in front of a burning barricade during a protest against Chile's President Sebastian Pinera and his government, during Pinera's birthday, in Santiago, Chile December 1, 2020. REUTERS/Ivan Alvarado 

A demonstrator holds a sign reading "Unhappy birthday killer Pinera, without justice there will not be peace" in front of riot police members during a protest against Chile's President Sebastian Pinera and his government, during Pinera's birthday, in Santiago, Chile December 1, 2020. REUTERS/Ivan Alvarado 

A child holds a piece of bread in her hand outside the new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 23, 2020. REUTERS/Yara Nardi 

A man is seen through a barbed wire at a new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 22, 2020. REUTERS/Yara Nardi 

A general view of a new temporary camp for migrants and refugees on the island of Lesbos, Greece, September 22, 2020. REUTERS/Yara Nardi 

A woman looks over the barbed wire of a chain-linked fence at a new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 21, 2020. REUTERS/Yara Nardi 

An Afghan child plays next to the barbed wire outside the new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 20, 2020. REUTERS/Yara Nardi 

The hand of man is seen behind a barbed wire at a new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 20, 2020. REUTERS/Yara Nardi 

A man is seen from behind at a new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 19, 2020. REUTERS/Yara Nardi 

A woman is seen from behind as she stands in front of a barbed wire at a new temporary camp for migrants and refugees, on the island of Lesbos, Greece, September 19, 2020. REUTERS/Yara Nardi 

A Syrian refugee girl wears oversized shoes, as Lebanon extends a lockdown to combat the spread of the coronavirus disease (COVID-19) at a Syrian refugee camp in the Bekaa valley, Lebanon May 7, 2020. Picture taken May 7, 2020. REUTERS/Ali Hashisho 

A migrant man hold his son's hand as they leave a migrant encampment, where more than 2,000 people live in while seeking asylum in the U.S., during the outbreak of the coronavirus disease (COVID-19), in Matamoros, Mexico May 1, 2020. REUTERS/Daniel Becerril 

A Salvadoran transgender woman washes her feet at a migrant encampment, where more than 2,000 people live in while seeking asylum in the U.S., during the outbreak of the coronavirus disease (COVID-19), in Matamoros, Mexico May 1, 2020. REUTERS/Daniel Becerril 

The carcass of a humpback whale lies washed up at Baker Beach in San Francisco, California, U.S. April 21, 2020. REUTERS/Stephen Lam 

Smoke rises as a fire burns containers used to house refugees and migrants in the Moria camp on the island of Lesbos, Greece, March 16, 2020. REUTERS/Elias Marcou