For the first time since Russia invaded Ukraine two years ago, Ukrainian soldiers have advanced 30km inside Russia. President Zelensky says Ukraine is pushing the war onto "the aggressor's territory" in the Kursk region.
What could this mean for the war? Vitaly Shevchenko, one of the hosts of Ukrainecast and the Russia editor of BBC Monitoring, explains.
We also discuss a recent fire at the Zaporizhzhia nuclear power plant, and why Ukraine and Russia have blamed each other for starting it.
Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Alex Rhodes and Mora Morrison Editor: Verity Wilde