A rose is hit by morning sunlight in Los Angeles, California, U.S., October 13, 2019. REUTERS/Lucy Nicholson

A worker checks cannabis plants at a medical cannabis farm near Kumanovo, North Macedonia September 13, 2019.Picture taken on September 13,2019.REUTERS/Ognen Teofilovski

Drops of dew sit on a spider web in the early morning mist in Los Angeles, California, U.S., August 19, 2019. REUTERS/Lucy Nicholson

Drops of dew sit on a spider web in the early morning mist in Los Angeles, California, U.S., August 19, 2019. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY

Drops of dew sit on a spider web in the early morning mist in Los Angeles, California, U.S., August 19, 2019. REUTERS/Lucy Nicholson

Dendrobium Changi Airport, hybrid orchids that were named to commemorate the opening of an orchid garden at the airport, are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles' arrival to the island and the country's upcoming National Day, at Gardens by the Bay in Singapore, August 4, 2019. Picture taken August 4, 2019. REUTERS/Loriene Perera

Mayara Mandai Sunlight hybrid orchids are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles' arrival to the island and the country's upcoming National Day, at Gardens by the Bay in Singapore, August 4, 2019. Picture taken August 4, 2019. REUTERS/Loriene Perera

Vanda Miss Joaquim orchids, Singapore's national flower, are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles' arrival to the island and the country's upcoming National Day, at Gardens by the Bay in Singapore, July 30, 2019. Picture taken July 30, 2019. REUTERS/Loriene Perera

Moth orchids are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles’ arrival to Singapore and the country's upcoming National Day, at Gardens by the Bay in Singapore, July 30, 2019. Picture taken July 30, 2019. REUTERS/Loriene Perera

Orchids hang from an arch during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles’ arrival to Singapore and the country's upcoming National Day, at Gardens by the Bay in Singapore, July 30, 2019. Picture taken July 30, 2019. REUTERS/Loriene Perera

Scorpion orchids are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles’ arrival to Singapore and the country's upcoming National Day, at Gardens by the Bay in Singapore, July 30, 2019. Picture taken July 30, 2019. REUTERS/Loriene Perera

Renanthera Singaporeans, hybrid orchids named to honour citizens of Singapore, are seen during the Orchid Extravaganza 2019 floral display, which celebrates the 200th anniversary of Stamford Raffles’ arrival to the island and the country's upcoming National Day, at Gardens by the Bay in Singapore, July 30, 2019. Picture taken July 30, 2019. REUTERS/Loriene Perera

A butterfly flies over a large crocodile in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A butterfly is seen above the eye of a large crocodile in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A butterfly is seen on a flower on Mount Hymettus in Athens, Greece, June 20, 2019. REUTERS/Alkis Konstantinidis

A butterfly is seen on a flower on Mount Hymettus in Athens, Greece, June 20, 2019. REUTERS/Alkis Konstantinidis

A butterfly is seen on a flower on Mount Hymettus in Athens, Greece, June 20, 2019. REUTERS/Alkis Konstantinidis

A Muslim boy holds a rose after offering Eid al-Fitr prayers marking the end of the holy fasting month Ramadan in Mumbai, India, June 5, 2019. REUTERS/Francis Mascarenhas

Interactive graphic examines when investors have been betting on the strength and weakness of the British pound throughout the Brexit timeline. embed code and instructions: https://reut.rs/2X5p9M3

Interactive graphic examines when investors have been betting on the strength and weakness of the British pound throughout the Brexit timeline.

A bee is pictured during a cherry blossom season on a street at Berlin's Lichterfelde district, Germany, March 30, 2019. REUTERS/Fabrizio Bensch

A bee is pictured during a cherry blossom season on a street at Berlin's Lichterfelde district, Germany, March 30, 2019. REUTERS/Fabrizio Bensch

Tulips are displayed at the Dutch Ambassador's residence during the Tulip Days celebration, an event celebrating the Dutch horticulture sector and its ties to the United States, in Washington, U.S., March 28, 2019. REUTERS/Brendan McDermid

Cherry blossoms begin to bloom in Washington, U.S., March 27, 2019. REUTERS/Brendan McDermid

Cherry blossoms begin to bloom in Washington, U.S., March 27, 2019. REUTERS/Brendan McDermid

Cherry blossoms in almost full bloom are seen in Tokyo, Japan, March 27, 2019. REUTERS/Issei Kato

Cherry blossoms in almost full bloom are seen in Tokyo, Japan, March 27, 2019. REUTERS/Issei Kato

Visitors walk through the Antelope Valley California Poppy Reserve in Lancaster, California, U.S., March 26, 2019. REUTERS/Mario Anzuoni

Poppies are pictured at the Antelope Valley California Poppy Reserve in Lancaster, California, U.S., March 26, 2019. REUTERS/Mario Anzuoni

Poppies are pictured at the Antelope Valley California Poppy Reserve in Lancaster, California, U.S., March 26, 2019. REUTERS/Mario Anzuoni

Afaf Hussein, 10, who is malnourished, holds her doll near her family's house in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 20, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein (C), 10, who is malnourished, plays with other girls near her family's house in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 20, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein (L), 10, who is malnourished, and her sister cook a meal in their family's kitchen outside their house in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein, 10, who is malnourished, eats a tin of peas provided for her recovery as her father Hussein Abdu, 40, and other relatives and friends have a meal outside their house in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 19, 2019. Abdu said Afaf is to eat only fruit and vegetables and no wheat products. "By God, if I had anything at all I would have bought her vegetables and fruit but I have nothing," Abdu said, adding that if his dire situation continues he wont be able to afford her diet or to transport to her one-month check up. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein, 10, who is malnourished, lies inside a hut as she receives an injection near her family's house in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 20, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Hussein Abdu, 40, the father of ten-year-old malnourished girl Afaf Hussein, performs prayers at a mosque in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. "Before the war we managed to get food because prices were acceptable and there was work ... Now they have increased significantly and we rely on yogurt and bread for nutrition," said Abdu. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein, 10, who is malnourished, looks from the window of a taxi during her trip back from treatment in Sanaa to her home village of al-Jaraib in the northwestern province of Hajjah, Yemen, February 16, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Hamza Shayaa, 11, a cousin of ten-year-old malnourished girl Afaf Hussein, stands outside Afaf's family's home in the village of al-Jaraib, in the northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A nurse weighs Afaf Hussein, 10, who is malnourished in Aslam, in the northwestern province of Hajjah, Yemen, February 17, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Students gather outside a school where Afaf Hussein, 10, who is malnourished, used to study near her home village of al-Jaraib in northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein, 10, who is malnourished, sits next to her stepmother as her father Hussein Abdu, 40, gives her a slice of an orange at a hotel in Sanaa, Yemen, February 14, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. "Before the war we managed to get food because prices were acceptable and there was work ... Now they have increased significantly and we rely on yogurt and bread for nutrition," said Abdu. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Students attend a class at a school where Afaf Hussein, 10, who is malnourished, used to study near her home village of al-Jaraib in northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Nurses measure the height of Afaf Hussein, 10, who is malnourished, at a clinic in Aslam, in the northwestern province of Hajjah, Yemen, February 17, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Afaf Hussein, 10, who is malnourished, receives an injection at the malnutrition treatment ward of al-Sabeen hospital in Sanaa, Yemen, February 3, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A nurse weighs Afaf Hussein, 10, who is malnourished, at the malnutrition treatment ward of al-Sabeen hospital in Sanaa, Yemen, January 31, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Afaf Hussein, 10, who is malnourished, waits to be weighed at the malnutrition treatment ward of al-Sabeen hospital in Sanaa, Yemen, February 3, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Hussein Abdu, 40, father of ten-year-old Afaf Hussein who is malnourished, helps her get on the donkey near their house in the village of al-Jaraib, northwestern province of Hajjah, Yemen, February 17, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. "Before the war we managed to get food because prices were acceptable and there was work ... Now they have increased significantly and we rely on yogurt and bread for nutrition," said Abdu. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Hussein Abdu, 40, father of ten-year-old Afaf Hussein who is malnourished, carries her as he herds sheep near their village of al-Jaraib in northwestern province of Hajjah, Yemen, February 19, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. "Before the war we managed to get food because prices were acceptable and there was work ... Now they have increased significantly and we rely on yogurt and bread for nutrition," said Abdu. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Afaf Hussein, 10, who is malnourished, receives an injection at a clinic in Sanaa, Yemen, February 14, 2019. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

As Yemen's war grinds into its fifth year with peace efforts stalling, ten-year-old Afaf's father sees little hope he will be able to give his starving daughter the food or healthcare she needs. Across Yemen's remote mountain villages, the country's war-induced economic crisis has left parents destitute, hungry and watching their children waste away from malnutrition and unclean water. "Before the war we managed to get food because prices were acceptable and there was work," 40-year-old Abdu said from al-Jaraib, a small agricultural village in the hills of Hajjah province in northwest Yemen. "Now they have increased significantly and we rely on yoghurt and bread for nutrition." Four years of conflict have pushed Yemen, which was already one of the poorest Arab states, to the brink of famine. War has cut transport routes for aid, fuel and food, reduced imports and caused severe inflation. Households have lost their incomes because public sector wages are not being paid and conflict has forced people from their homes and jobs. The United Nations says about 80 percent of the population needs some form of humanitarian assistance and two-thirds of all districts in the country are in a "pre-famine" state. Afaf, who now weighs around 11 kg and is described by her doctor as "skin and bones", has been left acutely malnourished by a limited diet during her growing years and suffering from hepatitis, likely caused by infected water. She left school two years ago because she got too weak. REUTERS/Khaled Abdullah SEARCH "YEMEN HUNGER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: YEMEN-SECURITY/HUNGER

Employees of the mining company Vale SA, accused by state prosecutors of covering up weaknesses at a dam that collapsed, are escorted by police officers in Belo Horizonte, Brazil February 15, 2019. REUTERS/Washington Alves

An employee of the mining company Vale SA, accused by state prosecutors of covering up weaknesses at a dam that collapsed, is escorted by police officers in Belo Horizonte, Brazil February 15, 2019. REUTERS/Washington Alves

Employees of the mining company Vale SA, accused by state prosecutors of covering up weaknesses at a dam that collapsed, are escorted by police officers in Belo Horizonte, Brazil February 15, 2019. REUTERS/Washington Alves

Sun rises in a field in Republican landscape reserve "Nalibotsky" near the village of Kozliki, Belarus September 20, 2018. REUTERS/Vasily Fedosenko

A Diaethria clymena, also know Cramer's eighty-eight, is pictured at a mountain in Sao Francisco Xavier, Brazil July 1, 2018. REUTERS/Nacho Doce

A spider is seen in front of the hydro power plant next to the HydroMiner cryptocurrency farming operation near Waidhofen an der Ybbs, Austria April 25, 2018. REUTERS/Leonhard Foeger

Butterflies sit on cocoons during an event to launch the Sensational Butterflies exhibition at the Natural History Museum in London, Britain, March 28, 2018. REUTERS/Hannah McKay

Blooming cherry blossoms are seen in Tokyo, Japan March 23, 2018. REUTERS/Toru Hanai

A great tit picks up to fly on a winter day in Warsaw, Poland March 3, 2018. REUTERS/Kacper Pempel