​​​​​​​ HAMILTON, Canada The UN Children's Fund (UNICEF) said Tuesday that more than 200 million children in over 130 countries will require humanitarian assistance in 2026 -- one of the most severe global crises facing children. Speaking at the first regular session of the UNICEF executive board, the agency’s chief, Catherine Russell, said the scale and complexity of challenges confronting children worldwide are intensifying as conflicts, climate shocks, economic instability and inequality