A senior Ukrainian official warned of the danger as he inspected damage caused by the collapse of the Kakhovka dam
Britain's Prince William said on Saturday he would honour the memory of his grandmother, Queen Elizabeth, by working to support his father King Charles.
"My grandmother famously said that grief was the price we pay for love," he said in a statement. "All of the sadness we will feel in the coming weeks will be a testament to the love we felt for our extraordinary Queen.
"I will honour her memory by supporting my father, The King, in every way I can."