One of Zelensky's closest allies: Who was Ukrainian Interior Minister Denys Monastyrsky?

Ukrainian Interior Minister Denys Monastyrsky, who died in a shock helicopter crash outside Kyiv Wednesday, was a deeply respected politician with a readiness to venture near frontlines. The 42-year-old trained lawyer was one of nine people on board a state emergency services helicopter when it crashed near a kindergarten and residential block in a commuter town near the Ukrainian capital.