<sod >An army crackdown triggered by an attack on 25Â AugustÂ by Rohingya insurgents on BurmaÂ security forces has led to the killing of at least 400 people and the exodus of nearly 125,000 Rohingya to neighbouring Bangladesh, leading to a major humanitarian crisis.< eod>< sod > An army crackdown triggered by an attack in late August by Rohingya insurgents on Burma security forces has led to the killing of at least 400 people and the exodus of nearly 125,000 Rohingya to Bangladesh.< eod>