From The New York Times:
The Ukrainian government count is 11,461 children known by name and taken without families to Russia or Russian-controlled areas. President Volodymyr Zelensky told the G20 summit that there are “tens of thousands” more who are known about only indirectly or with less detail. The youngsters here are among many thousands of Ukrainian children whom Russia has taken from Ukraine and in some cases put up for adoption. They should be a wake-up call to Americans and Europeans fatigued by support for Ukraine.