A woman holds a placard during a protest calling for the release of 276 abducted Nigerian schoolgirls outside Nigeria House on May 9, 2014 in London, England. 276 schoolgirls were abducted from their boarding school on 14 April, 2014 in the town of Chibok in north-eastern Borno state in Nigeria. The abductions have sparked protests around the world calling for the release of the girls who are being held by the militant group Boko Haram. (Getty)