As Morocco prepares to host the signing of a landmark global migration agreement, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions.

These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact being finalized at a conference in Marrakech on Monday and Tuesday.

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Wazzizi, a sub-Saharan migrant from Guinea, sits outside the tent where he lives at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

As Morocco prepares to host the signing of a landmark global migration agreement, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions.

Sub-Saharan migrants sit in a tent they share at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Morocco is a major source of Europe's migrants but is also a transit country and magnet for other Africans fleeing poverty.

Sub-Saharan migrants compete at a table game as a way to make money, at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Sub-Saharan migrants compete at a table game as a way to make money, at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A view of tents where sub-Saharan migrants stay at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A view of tents where sub-Saharan migrants stay at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A sub-Saharan migrant gets a haircut at a makeshift hair salon at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A sub-Saharan migrant gets a haircut at a makeshift hair salon at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Rising numbers of migrants live in the makeshift camp on a soccer field near a busy Casablanca bus station. Scant food, lack of heat, no sanitation, lice and respiratory infections are the main worries at the Oulad Ziane camp.

Wazzizi, a sub-Saharan migrant from Guinea, sits outside the tent where he lives at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Wazzizi, a sub-Saharan migrant from Guinea, sits outside the tent where he lives at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Morocco is a major source of Europe's migrants but is also a transit country and magnet for other Africans fleeing poverty.

Sub-Saharan migrants sit in a tent they share at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Sub-Saharan migrants sit in a tent they share at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Sub-Saharan migrants compete at a table game as a way to make money, at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

Sub-Saharan migrants compete at a table game as a way to make money, at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A view of tents where sub-Saharan migrants stay at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A view of tents where sub-Saharan migrants stay at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A sub-Saharan migrant gets a haircut at a makeshift hair salon at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)

A sub-Saharan migrant gets a haircut at a makeshift hair salon at at Ouled Ziane camp in Casablanca, Morocco, Thursday, Dec. 6, 2018. As Morocco prepares to host the signing of a landmark global migration agreement next week, hundreds of migrants are languishing in a Casablanca camp rife with hunger, misery and unsanitary conditions. These sub-Saharan Africans who dream of going to Europe are a symbol of the problems world dignitaries are trying to address with the U.N.'s first migration compact. (AP PhotoMosa'ab Elshamy)