Ukraine demands return of children taken by Russia: How did Kyiv come up with the list?

[newspostng]

BOOK INTERNATIONAL FLIGHTS TICKETS LOCAL FLIGHTS HOTELS BOOKINGS WORLDWIDE AND MORE AT CHEAPEST RATE EVER! CLICK HERE TO BOOK YOUR FLIGHT AND RECEIVE YOUR FLIGHT TICKET INSTANTLY

Ukraine demands return of children taken by Russia: How did Kyiv come up with the list?

Kyiv handed over to Moscow a list of forcefully deported Ukrainian children, demanding that the Kremlin return them home. Who are the children on the list, and why did Ukraine include just some 300 names in it?
Source: Ukraine demands return of children taken by Russia: How did Kyiv come up with the list?