Keir Starmer and Volodymyr Zelenskyy in Downing Street in July.Volodymyr Zelenskyy has thanked the UK for “saving countless lives” in Ukraine since Russia’s invasion nearly three years ago.The Ukrainian president was responding to Keir Starmer’s insistence that Britain’s support for his country “remains iron clad”.The PM’s comments came on the “sobering milestone” of  the 1,000th day of the brutal war.Posting on X, Zelenskyy replied: “Dear Keir Starmer, thank you, and the entire United Kingdom, for their unwavering support for Ukraine.“The UK’s steadfast assistance has been crucial in saving countless lives.”Dear @Keir_Starmer, thank you, and the entire United Kingdom, for their unwavering support for Ukraine. The UK’s steadfast assistance has been crucial in saving countless lives.— Volodymyr Zelenskyy / Володимир Зеленський (@ZelenskyyUa) November