### Instruction: Who is Sergey or Sergiy Korsunsky
### Response: Sergiy Korsunsky (born August 10, 1962 in Kyiv, Ukrainian SSR) is a Ukrainian diplomat. He previously served as Chargé d'affaires of Ukraine to the United States during 2005 and Ambassador Extraordinary and Plenipotentiary of Ukraine to Turkey (2008-2016). Director of the Hennadii Udovenko Diplomatic Academy of Ukraine in 2017-2020.

Ambassador of Ukraine to Japan (since April 2020).