children's agency uncief.ased a report marking the abduction of over 200 school girls in nigeria a year ago another report by amnesty international says at least 2,000 women and girls have been abducted since the start of 2014. it adds that children are being forced in to marriage and sexual slavery and being trained to fight. the report claims 5,500 civilians were killed as boko haram swept through villages and town as cross northeast nigeria last year. despite this uncief says it receives only 15% of the 26 1/2 mounts need today its human tear 10 operations needed in in nigeria this year. campaigners are demanding the return of the girls kidnapped. they put tape over their mouth during a silents march. meant to symbolize the silent voices of abducted school girls working with the consultancy firm as political risk analysis, she joins us now live from london, good to have you with us. >> thank you. >> why is boko haram focusing so much on children, on kidnapping children? >> i mean, if you look at the trends

the six children who were interviewed directly by people from the commission for human rights and unciefn the accounts that they gave up their friends and others -- other children they knew who some hart been subject today the same abuse. in some cases regular abuse. this was a constant ongoing thing. there is absolutely no question that there is a moral ethical and legal obligation to the united nations and its agencies to move in immediately and make sure first and foremost that the abuse stops and that the victims are treated. >> it's interesting you said there regular abuse give us an idea from talking with your sources, we talking about a few isolated cases in which a few number of children were enlargedly abused or a much bigger problem was going on? >> it's a much bigger problem than that. the six children who were -- whose interviews were documented by the u.n. staff spoke about being able to go to their friends and recount their stories and learn what sorts of sexual favors were demanded of chirp in exchange for food. and one boy, for instance, named about five of his friends wh