Despite of Lord Krishna showing his Vishwaroop to Kauravas, they still declared war.

It was pure arrogance, ignorance, and even foolishness of Duryodhana to see Bhagwaan's divinity as an illusion. This is a lesson for all humanity that even when the truth is right before us, it takes humility and wisdom to recognize and act upon it. Understanding and accepting a power stronger than you is intelligence. Surrendering to a mightier being does not make someone weak but only stronger in knowledge and emotions. I hope and pray humanity today accepts dharma and makes effort to truly bring peace into themselves and the world. Jai Shree Krishna!