Nigeria Launches Jets and Helicopter Gunships Against Militants
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The Nigerian military has begun operations against the Islamist militant group Boko Haram, using fighter jets and helicopter gunships. Thousands of people have died in Boko Haram attacks and the government's counter-insurgency effort in the past four years. As a result, there are some doubts over the effectiveness of an all-out military response, as Henry Ridgwell reports from London.