“ According to traditional interpretations, the sultan’s letter and the Cossack response (also known as the Zaporozhian/Cossack letter to the Turkish sultan;[2] Ukrainian: Лист запорожців турецькому султанові) were written between 1672 and 1680.[2] The sultan supposedly demanded the Cossacks to surrender by boasting about his titles and power, and the Cossacks, allegedly commanded by a man named Ivan Sirko (or “Zaxarcenko”[3]) sent an insulting sarcastic reply in which they vowed to fight against the sultan.[2]”