An Associated Press investigation reveals that factions and militias on all sides of the war in Yemen have blocked or diverted the delivery of food aid or sold it for profit on the black market.

The AP found that large amounts of food make it into the country, but once there, do not get to people who need it most. This raises questions about the ability of United Nations agencies and other big aid organizations to operate effectively in Yemen.

The investigation was based on public records and confidential documents obtained by the AP and interviews with more than 70 aid workers, government officials and average citizens from six different provinces.

The U.N. estimates 1.5 million Yemeni children are malnourished, including 400,000 to 500,000 who suffer life-threatening “severe acute malnutrition.”

A woman sits with her baby inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018 photo. (AP Photo/Nariman El-Mofty)
A woman sits with her baby inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018 photo. (AP Photo/Nariman El-Mofty)
A child stands in a room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A child stands in a room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A shelter for displaced persons in Ibb, Yemen, is shown in this Aug. 3, 2018, photo. Yemen’s four-year-old civil war has caused a humanitarian disaster, with millions barely able to feed themselves. (AP Photo/Nariman El-Mofty)
A shelter for displaced persons in Ibb, Yemen, is shown in this Aug. 3, 2018, photo. Yemen’s four-year-old civil war has caused a humanitarian disaster, with millions barely able to feed themselves. (AP Photo/Nariman El-Mofty)
A family poses for a photograph in a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A family poses for a photograph in a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A bucket filled with bread at a shelter for displaced persons in Ibb, Yemen, is shown in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A bucket filled with bread at a shelter for displaced persons in Ibb, Yemen, is shown in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A family sits in their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A family sits in their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A family poses for a photograph in their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. (AP Photo/Nariman El-Mofty)
A family poses for a photograph in their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. (AP Photo/Nariman El-Mofty)
A woman holds her baby as she leaves her room in a shelter for displaced persons in Ibb, Yemen, in this Aug. (AP Photo/Nariman El-Mofty)
A woman holds her baby as she leaves her room in a shelter for displaced persons in Ibb, Yemen, in this Aug. (AP Photo/Nariman El-Mofty)
Children look out of their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
Children look out of their room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
Children play in a room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
Children play in a room at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
A man fixes his scarf at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. Yemen’s four-year-old civil war has sent millions fleeing from their homes, complicating the aid effort  Some families told the AP they register for relief but the food never reaches them. (AP Photo/Nariman El-Mofty)
A man fixes his scarf at a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. Yemen’s four-year-old civil war has sent millions fleeing from their homes, complicating the aid effort Some families told the AP they register for relief but the food never reaches them. (AP Photo/Nariman El-Mofty)
A truck carries aid on a road in Aden, Yemen, in this July 23, 2018, photo. Relief workers in Yemen said armed factions often manipulate lists of those registered to receive food aid to divert it to their own supporters and families. (AP Photo/Nariman El-Mofty)
A truck carries aid on a road in Aden, Yemen, in this July 23, 2018, photo. Relief workers in Yemen said armed factions often manipulate lists of those registered to receive food aid to divert it to their own supporters and families. (AP Photo/Nariman El-Mofty)
This July 24, 2018, photo shows a gas station on a road in Shabwah, Yemen. The civil war has pushed Yemen into economic collapse, with major fuel shortages along with inflation that has left many unable to afford food. (AP Photo/Nariman El-Mofty)
This July 24, 2018, photo shows a gas station on a road in Shabwah, Yemen. The civil war has pushed Yemen into economic collapse, with major fuel shortages along with inflation that has left many unable to afford food. (AP Photo/Nariman El-Mofty)
The entrance to the port where aid is received, in Aden, Yemen, is shown in this July 23, 2018 photo. (AP Photo/Nariman El-Mofty)
The entrance to the port where aid is received, in Aden, Yemen, is shown in this July 23, 2018 photo. (AP Photo/Nariman El-Mofty)
A man sells aid supplies at a market in Aden, Yemen, in this July 23, 2018, photo. Throughout Yemen, food that is supposed to be given for free to starving families ends up for sale in markets. (AP Photo/Nariman El-Mofty)
A man sells aid supplies at a market in Aden, Yemen, in this July 23, 2018, photo. Throughout Yemen, food that is supposed to be given for free to starving families ends up for sale in markets. (AP Photo/Nariman El-Mofty)
The entrance of the hangar of the United Nations in Aden, Yemen, in this July 23, 2018, photo. An AP investigation found that U. (AP Photo/Nariman El-Mofty)
The entrance of the hangar of the United Nations in Aden, Yemen, in this July 23, 2018, photo. An AP investigation found that U. (AP Photo/Nariman El-Mofty)
Sisters play in their room at a shelter for displaced persons in Ibb, Yemen in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
Sisters play in their room at a shelter for displaced persons in Ibb, Yemen in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
People walk in a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. Even with food aid that makes it into Yemen, 15. (AP Photo/Nariman El-Mofty)
People walk in a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. Even with food aid that makes it into Yemen, 15. (AP Photo/Nariman El-Mofty)
A baby sleeps inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. The U. (AP Photo/Nariman El-Mofty)
A baby sleeps inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. The U. (AP Photo/Nariman El-Mofty)
People stand near their rooms inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)
People stand near their rooms inside a shelter for displaced persons in Ibb, Yemen, in this Aug. 3, 2018, photo. (AP Photo/Nariman El-Mofty)

Source: The Associated Press