This article will serve three purposes:

In the European Union, Serbia, and most other jurisdictions, unauthorized distribution of copyrighted material is illegal. Fines can be substantial. If the book is legitimate but rare, pirating it deprives the author (likely a small, independent writer) of their deserved income.

Kraljevstvo Hazara is a two-part geopolitical and historical work by Serbian author Dejan Lučić

The Khazar Kingdom began to crumble in the late 10th century, primarily due to repeated raids by the Rus' (particularly Prince Sviatoslav I of Kiev around 968-969). The final blow came from the nomadic Pechenegs and later the Mongol invasions. The Khazars disappeared as a political entity, but theories (popularized by Koestler) suggest their descendants contributed to the Ashkenazi Jewish population—a highly controversial but fascinating hypothesis.