Six years of Boko Haram violence has killed more than 25,000 people and forced 2.5 million from their homes. But the war is not yet won and the humanitarian impact will be felt for many years to come. Nigeria’s insurgent group Jama'atu Ahlis Sunna Lidda'awati wal-Jihad (People Committed to the Propagation of the Prophet's Teachings and Jihad), better known as Boko Haram, has declared allegiance to
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