Intro

President Trump has launched a fresh attack on President Zelensky, calling him a "dictator" and saying he has done a "terrible job".

Zelensky earlier accused the US president of "living in a disinformation space" created by Russia.

Victoria and Vitaly analyse how this diplomatic row is playing out.

And Victoria speaks to Russia’s ambassador to the UK, Andrei Kelin.

Today’s episode is presented by Victoria Derbyshire and Vitaly Shevchenko. The producers were Ben Carter and Elliot Ryder. The series producer is Tim Walklate. The assistant editor is Ben Mundy. Email Ukrainecast@bbc.co.uk with your questions and comments. You can also send us a message or voice note via WhatsApp, Signal or Telegram to +44 330 1239480

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