Jan Egeland, secretary-general of the Norwegian Refugee Council, said the humanitarian organization’s workers in Iran have reported to him that “countless homes, hospitals and schools have been damaged or destroyed,” and that nearly every neighborhood in Tehran has sustained damage.

“Civilians are paying the highest price for this war — it must end” he said in a statement.

“If this war continues, we risk a far wider humanitarian disaster,” he added. “Millions could be forced to flee across borders, placing immense pressure on an already overstretched region.”