Kamil Galeev of the Woodrow Wilson International Center for Scholars has said that the "symbol invented just a few days ago became a symbol of new Russian ideology and national identity."[18] Some critics have described the "Z" as a variant of Nazi symbolism.[8][19] Ukrainian Minister of Defense Oleksii Reznikov condemned the use of the "Z" symbol on 7 March, noting its similarity to the name of the Station Z gas chamber of the Sachsenhausen concentration camp.[20]