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Sashko and his mum were separated after being captured by Russian soldiers in Mariupol. Now 13, Sashko hasn鈥檛 seen or heard from his mother for almost two years. Along with his grandmother, he tells Victoria and Irena their story and how they鈥檝e not given up on their search for her.

And are Nato members pulling their weight when it comes to defence spending? Donald Trump claims he鈥檇 encourage hostile states to attack Nato countries who he says aren鈥檛 paying enough. Victoria and Irena discuss this with Professor Katarzyna Zysk, from the Norwegian Institute for Defence Studies, and put some listener questions to her.

Today鈥檚 episode is presented by Victoria Derbyshire and Irena Taranyuk.

It was made by Keiligh Baker. The producers were Arsenii Sokolov and Ivana Davidovic. The technical producer was Mike Regaard. The series producer is Lucy Boast. The senior news editor is Jonathan Aspinwall.

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.

You can join the Ukrainecast discussion on Newscast鈥檚 Discord server here: tinyurl.com/ukrainecastdiscord.