The United Nations will do all it can to help prevent food rations being cut for Rohingya refugees in camps in Bangladesh, U.N. Secretary-General Antonio Guterres said on Friday during a visit to the world’s largest refugee settlement.

Bangladesh says repatriation of the refugees to Myanmar is the ultimate solution. The Buddhist-majority Myanmar has been accused in an international court of genocide against Rohingya. Complexities over verification and other diplomatic and political issues have made the future of the refugees bleak.

UN Secretary-General António Guterres, during his visit to the Rohingya refugee camps in southern Bangladesh, vowed to do everything in his power to prevent further hardship as drastic aid cuts threaten food supplies and other critical relief efforts.