School textbooks in Ukraine are rewriting the history of Cossacks. This was reported by Qazaqyia.kz citing Sputnik Kazakhstan.

In the textbooks, Cossacks are described as a separate Ukrainian people, Moscow as an age-old enemy, and the Pereiaslav Rada as a fateful mistake that Ukrainians opposed as early as the 17th century.

Why is it necessary to portray Khmelnytsky as a fighter for an independent Ukraine and Mazepa as a national hero? And what is the "core of Ukrainian identity"?

This is discussed in the second part of Kirill Orlov's documentary project "Interesting History".