The Duke and Duchess also learnt about the DEC’s ongoing appeal to support people affected by the conflict in the eastern European country.
The appeal has raised more than £280million, including £25million matched by the Government.
They have also had donations from companies, trusts, arts institutions, community groups, schools and individuals.
William and Kate spoke on a video call with those on the ground in Ukraine to learn more about the work the funds are helping to support and the human impact of the conflict.