Refugee agency special envoy Angelina Jolie visited camps in Bangladesh for Muslim Rohingya refugees from Myanmar this week and on Tuesday (February 5) condemned the world's failure to prevent a crisis that saw 730,000 people driven from their homes.
Jolie's visit came as the United Nations said it was preparing to launch a new appeal for $920 million to support the refugees, who fled a brutal military crackdown in neighboring Rakhine state in Myanmar in response to militant attacks in August 2017.
Investigators have accused Myanmar's army of carrying out mass killings and rapes with "genocidal intent" during the massive offensive that laid waste to hundreds of Rohingya villages in the western Rakhine state.
Myanmar denies the charge and says its offensive was a legitimate response to an insurgent threat and has pledged to welcome the refugees back.
But the United Nations says conditions are not yet right for return.
The Rohingya say they want guarantees over their safety and to be recognized as citizens before returning.