53 year old iman Nurul Islam leads afternoon prayers at his half-built mosque at the makeshift refugee camp at Kutupalong. He describes events over the border in Rakhine State: 'The Myanmar Military came and burnt down our houses. I had 10 family members, one of my daughters was killed by bullets and my two others daughter were lost when we were fleeing.' The United Nations reported that by 29 September 2017 more than 500,000 Rohingya refugees had crossed the border from Myanmar into Bangladesh. They are fleeing a campaign by the Myanmar military that began on 25 August 2017, responding, according to the military, to attacks by Rohingya militants against several police posts in which 12 officers were killed. The UN, however, have described the military action as 'a textbook example of ethnic cleansing', stating that the campaign is 'clearly disproportionate'.