Zelensky shakes up Ukraine's defence leadership in anti-corruption push
- Six Ukrainian deputy defence ministers dismissed in major reshuffle
- Part of new minister's anti-corruption effort and show of strength
- Deputy Hanna Maliar also dismissed despite good reputation
- Allows Zelensky to show progress on corruption at UN
- Buys time with donors to see results of new appointments
- Risky move given Umerov's inexperience and need for continuity