The great guru had just one weakness and that was his son Ashwatthama, whom he loved dearly. So Lord Krishna suggested that they somehow manage to convince him that his son was dead. Once he was unnerved it would only be a matter of time before he was out of the running. Neither Arjuna nor Yudhisthir were happy about this and only agreed to go through with this after realising that the battle would otherwise be a lost cause. They then decided to kill an elephant by the same name and then go to Dronacharya with the news so they would not be lying.Bhima, the second and strongest of the brothers went ahead and killed an elephant by the name of Ashwatthama and then went up to Dronacharya and said, "Ashwatthama is dead." Dronacharya was shaken to the core of his being and was absolutely heartbroken at first. And then on second thought he realised that his son was almost as strong, skilled and powerful as he was and