A helicopter crash in a Kyiv suburb on Wednesday took the life of Ukraine’s Interior Minister Denys Monastyrsky. His death has left a gaping hole in President Volodymyr Zelenskiy’s team. Member of Parliament Mariia Mezentseva knew many of those who died in the crash and worked closely with the minister. She chairs Ukraine’s delegation to the Council of Europe. The World’s Marco Werman spoke with Mezentseva, who is in Davos, Switzerland.