we'll have the headlines for you at the top of the hour, which is straight after this programme. the rohingya are often called the most persecuted minority in the world. six years ago, they had to flee their home country of myanmar after a deadly military campaign that the united states government has called a genocide. now, in the refugee camps of bangladesh, they're being murdered. hundreds have been killed by drug gangs and militants and the violence is ongoing. unhcr is paid tens of millions of dollars to run a protection programme for refugees. but with rohingya dying every week, is that protection programme working?