A child rescued by Nigerian soldiers from Islamist militants Boko Haram at Sambisa Forest stands near coloured drawings made by some of the freed hostages, on May 6, 2015 at Malkohi refugee camp in Yola. Nigerian troops have rescued 25 more women and children from Boko Haram\'s northeastern stronghold in the Sambisa Forest, killing a number of insurgents and destroying Islamist camps, the military said today. AFP PHOTO/EMMANUEL AREWA (Photo credit should read EMMANUEL AREWA/AFP/Getty Images) (credit:EMMANUEL AREWA via Getty Images)
CHAD-NIGERIA-UNREST-REFUGEES(02 of09)
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A young Nigerian refugee draws an attack scene on April 6, 2015 during a therapy program managed by UNICEF in the refugee camp near Baga Sola. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO/PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST-REFUGEES(03 of09)
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A young Nigerian refugee draws an attack scene on April 6, 2015 during a therapy program managed by UNICEF in the refugee camp near Baga Sola. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO/PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST-REFUGEES(04 of09)
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A young Nigerian refugee draws an attack scene on April 6, 2015 during a therapy program managed by UNICEF in a refugee camp near Baga Sola. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST(05 of09)
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A young Nigerian refugee draws an attack scene on April 6, 2015 during a therapy program managed by UNICEF in the refugee camp near Baga Sola.. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST(06 of09)
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A young Nigerian refugee draws an attack scene on April 6, 2015 during a therapy program managed by UNICEF in the refugee camp near Baga Sola.. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST(07 of09)
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Young Nigerian refugees draw an attack scene on April 6, 2015 during a therapy program managed by UNICEF in the refugee camp near Baga Sola.. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST(08 of09)
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A young Nigerian refugee peers into a tent as he waits on April 6, 2015 to draw as part of a therapy program managed by UNICEF in the refugee camp near Baga Sola.. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)
CHAD-NIGERIA-UNREST(09 of09)
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Young Nigerian refugees wait on April 6, 2015 to draw as part of a therapy program managed by UNICEF in the refugee camp near Baga Sola.. Seven civilians were killed in an attack in Chad blamed on Nigerian Boko Haram rebels, officials said on April 6. AFP PHOTO / PHILIPPE DESMAZES (Photo credit should read PHILIPPE DESMAZES/AFP/Getty Images) (credit:PHILIPPE DESMAZES via Getty Images)