Seven years after Russia illegally annexed Crimea, conflict between Russia and Ukraine has resurged, with Putin deploying Russian regular forces along Ukraine's eastern border. In this podcast episode, the CER's director Charles Grant speaks to Ian Bond, our director of foreign policy, and Orysia Lutsevych, research fellow and manager of the Ukraine Forum at Chatham House, about what Putin's endgame could be and how Ukraine and its Western allies should respond.

Music by Edward HipkinsProduced by Rosie Giorgi