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Syrians check the rubble following an air strike by government forces on the eastern Shaar neighbourhood of the northern Syrian city of Aleppo on September 17, 2015. Once Syria's economic powerhouse, Aleppo has been ravaged by fighting since the rebels seized the east of the city in 2012, confining government forces to the west. AFP PHOTO / FADI AL-HALABI        (Photo credit should read Fadi al-Halabi/AFP/Getty Images)
Syrians check the rubble following an air strike by government forces on the eastern Shaar neighbourhood of the northern Syrian city of Aleppo on September 17, 2015. Once Syria's economic powerhouse, Aleppo has been ravaged by fighting since the rebels seized the east of the city in 2012, confining government forces to the west. AFP PHOTO / FADI AL-HALABI        (Photo credit should read Fadi al-Halabi/AFP/Getty Images)

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    Syria's forgotten crisis: The internally displaced

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Syria's forgotten crisis: The internally displaced

Nine million Syrians are displace within their own country -- a staggering crisis. Fred Pleitgen speaks with the U.N. Special Rapporteur for Internally Displaced Persons.

Syria's forgotten crisis: The internally displaced

Nine million Syrians are displace within their own country -- a staggering crisis. Fred Pleitgen speaks with the U.N. Special Rapporteur for Internally Displaced Persons.