Since the other petition got closed http://chng.it/sQcz4zRMfB and if the game also has Polish, Czech, Italian, French, Swedish and Japanese tanks and other tanks that never existed then why don't they also add a Yugoslavian tech tree in the game, sign the petition if you want Wargaming to add it in the game

Yugoslav Ground Forces: https://en.wikipedia.org/wiki/Yugoslav_Ground_Forces

SFRY Tank Encyclopedia: http://www.tanks-encyclopedia.com/coldwar/yugoslavia