Duryodhana hated the Pandavas, especially Bhima for his brute strength and bullying nature.
Over time, the hostility of the Kauravas towards the Pandavas reached a point of no return. The rest, as they say, is history.
This video tells the story about how every attempt of Duryodhana to kill Bhima not only backfired but actually turned counter-productive.
Kulture Katha 