13 February 2015 Last updated at 16:57 GMT Nigerian Boko Haram militants have carried out an attack on Chad overnight, the first such assault on Chadian soil, officials say. Fighters crossed Lake Chad in four motorboats and attacked a village, an army spokesman told the BBC. The BBC's West Africa correspondent Thomas Fessy reports from Dakar, Senegal. Share this story About sharing Email Facebook Twitter WhatsApp Related...