A girl rescued from Boko Haram's hides her face at the Malkohi camp for internally displaced persons outside Yola, in northeast Nigeria, on Monday, May 25, 2015. The child was among 31 people mostly young children under the age of 12  who was rescued from Boko Haram's Sambisa Forest stronghold during military operations last week. Nigeria's military has freed hundreds of kidnapped women and children from Boko Haram in recent weeks. AFP PHOTO/STRINGER        (Photo credit should read STRINGER/AFP/Getty Images)