Ukraine’s president has returned a state decoration he received from Poland amid a diplomatic spat. Poland stripped Volodymyr Zelensky of the award after Zelensky renamed a ⁠military unit in honour of the World War Two-era Ukrainian Insurgent Army. The insurgents were involved in massacres which Poland considers a genocide. Two former Ukrainian presidents and other senior officials also returned awards received from Poland in protest. Our correspondent in Kiev, Emmanuelle Chaze, reports.