How was Duryodhana related to Krishna?

Duryodhana is the main antagonist of the Mahabharata. He is the eldest son of King Dhritarashtra and Queen Gandhari of Hastinapur. He and his ninety nine younger brothers are together called the Kauravas.

Central to Duryodhana’s life is his belief that Dhritarashtra was the rightful king of Hastinapur, and that he had been cheated out of the throne by Bhishma and Vidura. Duryodhana attempts to correct this wrong by proclaiming himself heir to the Kuru throne.

Duryodhana’s relentless envy a...