Violence against children in the central Sahel region increased sharply in the last quarter of 2023, surging by 70 percent compared to the previous three months, the United Nations Children's Fund (UNICEF) warned on Wednesday. The UN agency said that in Burkina Faso, Mali and Niger, cases of recruitment and use of children by armed groups, as well as killings and maiming, jumped by more than 130 percent between the two reporting periods.