The Govt are addressing this anyway as well as fining airlines.Is it a possibility that they kidnapped the children? By the way that is a nonsense comparison as both the passport and immigration offices are still functioning in the Ukraine and the validity of the children and parent can be checked.
"without correct documentation" that could be incorrect visa. Not someone destroying their passport and ID on route.
Up to the end of April, over 1800 arrived here with no identification or false documents.
War torn regions are just pure chaos and there is little or no functioning admin especially in the early days.
With the Russians now just blowing up dams there will be many more Ukrainian refugees fleeing without documents.