Five years on, Nigerians await the release of the remaining 112 kidnapped Chibok girls

Last Sunday marked five years since Boko Haram jihadists kidnapped 276 schoolgirls from their school in northeastern Nigeria. While some are back, 112 are still missing. The mass abduction sparked a global outcry and the #BringBackOurGirls social media campaign and remains Boko Haram's biggest publicity coup.