Prince Charles went on to give an unexpected speech in which he said he and his wife had been "deeply moved" during their visit, especially after seeing the "extraordinary bravery, generosity and fortitude of the Ukrainian community in the face of such truly terrible aggression".
Meanwhile, the Duke and Duchess of Cambridge have also shared their support for Ukraine in a tweet to the Kensington Royal Twitter account, where the couple say: "Today we stand with the President and all of Ukraine's people as they bravely fight for that future."
And Prince Harry and Meghan shared their own statement of support on their Archwell Foundation website the day the attack started, writing: "Prince Harry and Meghan, The Duke and Duchess of Sussex and all of us at Archewell stand with the people of Ukraine against this breach of international and humanitarian law and encourage the global community and its leaders to do the same."
On February 24 Russia launched a large-scale military invasion of Ukraine which has killed and injured thousands. The UN General Assembly met earlier this week and voted to demand Russia stop its offensive in Ukraine and withdraw all troops, with nations from world powers to tiny island states condemning Moscow.