Q. Fighting from dharma side

How can you claim that Lord krishna foguht from the dharma side. It was mere a family dispute of holding the chair of command and controversy over who will take the charge whether Duryodhan or Dharmaraj? This was not a global matter where Lord Krishna need to come and solve the issue by playing politics and all acts of double game. All the warriors from duryodhan side were killed by a political game and not like real warrior. Arjun doesnot deserve to be told Geeta and shown the viraat roop as he was afraid of fighting the war just by seeing the warriors at the duryodhan side. He was totally failure without support of Lord Krishna and just followed lord krishna to kill his opponents like a coward. How the history has claimed kauravas as adharma side? And why Lord Krishna supported Pandavas? Why Lord Krishna simply joined this small routine family dispute and hated the duryodhan side? Everybody has the right to fight for the chair. If supreme lord joins every time for such issues than Ambani brother's issues should have also been settled by Lord Krishna only.