In Ukraine, authorities say 120,000 children have been forcibly taken to Russia since the invasion began.
Two-thirds of all Ukrainian children have been forced from their homes.
President Volodomyr Zelensky says tens-of-thousands of civilians have been killed in Mariupol.
Many humanitarian corridors are still impassible
Mariupol's city administration says 33,000 residents had been deported to Russia or territories held by Russian-backed separatists in eastern Ukraine.
Russia says it's "evacuated" 723,000 people from Ukraine since the start of what it called its "special operation."
A former legal adviser to the International Committee of the Red Cross, and now a law faculty member at Te Herenga Waka, Victoria University of Wellington, Dr Marnie Lloydd, told Māni Dunlop those reports are of grave concern, and show a lack of respect for the rules of warfare.