Analysis: The generational shift in Ukraine’s military leadership

President Volodymyr Zelensky's decision Tuesday to replace Ukraine's commander-in-chief, 60-year-old Oleksandr Syrskyi with 43-year-old Mykhailo Drapatyi, comes in the wake of widespread protests after Zelensky fired his 35-year-old defense minister Mykhailo Fedorov. CNN's Nick Paton Walsh lays out how even with the shakeups - bringing in a younger general from a newer generation of military leaders to replace a Soviet-era one - the same big challenges remain.