dhaka bangladesh seek international support plan relocate rohingya muslims flee violence myanmar remote bay bengal island critics say flood-prone unlivable 300,000 rohingya flee bangladesh buddhist-majority myanmar since late violence begin aug. 25 join 400,000 others already live cramp makeshift camp unite nations top human right official monday slam myanmar conduct cruel military operation rohingya brand textbook example ethnic cleanse create huge challenge bangladesh term provide shelter well humanitarian assistance bangladesh foreign ministry say statement monday foreign minister abul hassan mahmood ali hold talk diplomats urge international community push myanmar find permanent solution crisis seek support transportation rohingya bhashan char also know thengar char bangladesh one world poor crowd nations plan develop thengar char emerge silt bangladesh delta coast 11 years ago two hours boat near settlement regularly flood june-september monsoons seas calm pirate roam nearby water kidnap fishermen ransom plan develop island use house refugees criticize humanitarian workers propose 2015 revive last year bangladesh though insist alone right decide shelter grow number refugees bangladesh seek support move flee rohingya remote flood-prone island