general, antonio guterres, to visit myanmar. it comes after mr guterres told the un security council that violence against rohingya muslims has spiralled into the world's fastest growing refugee emergency. but the united nationss been accused of a series of failures. 0ur correspondentjonah fisher has seen internal un documents, outlining concerns about the handling of the rohingya conflict. this is his special report. in the months since rohingya muslims first began fleeing into bangladesh, the united nations has been at the forefront of the response. delivering aid and making robust statements, condemning the burmese authorities. the situation remains, or seems, a textbook example of ethnic cleansing. but could, and should, the un have done more before the killing and burning started? really disturbing to think that some of this could have been prevented. this woman is a lawyer and aid worker. between 2013 and 2015 she ran the office of the top united nations official in myanmar. it was a stressful time. she says her boss was so afraid of upsetting the burmese government that any suggestion that they stand up for the rohingya's human rights was off—limits. even in internal meetings. we could do it but it wou