The concept of diplomatic immunity is found in old Indian epics like Ramayana (between 3000 and 2000 BC). (Traditional Hindu dating: more than 100,000 years ago) and Mahabharata (circa the fourth century BC; traditional Hindu dating: 5000 BC), where messengers and diplomats were granted immunity from the death penalty. In Ramayana, when the demon king Ravana ordered Hanuman`s death, Ravana`s younger brother Vibhishana said messengers or diplomats should not be killed according to old practices.  Diplomatic immunity is a form of legal immunity and a policy between governments that ensures that diplomats are given safe passage and are considered not punishable or prosecuted by the laws of the host country (even if they can be expelled). It was agreed as international law in the Vienna Convention on Diplomatic Relations (1961), although there is a much longer history in international law. By definition, diplomats entering the country safely, their violation is generally considered a major honor violation, although there have been many cases of killing diplomats. Genghis Khan and the Mongols were known to have strongly insisted on the rights of diplomats, and they often took terrifying revenge against any state that violated those rights. The Mongols often destroyed entire cities in retaliation for the execution of their ambassadors and invaded and destroyed the Khwarezmid Empire after their ambassadors were mistreated.  In July 2013, Joshua Walde, a U.S. diplomat in Nairobi, Kenya, rammed into a minibus, killing one man and seriously injuring eight others who had no financial assistance to pay hospital bills.
 U.S. embassy agents took the diplomat and his family out of Kenya the next day.  The U.S. government has expressed concern about the impact the accident could have on bilateral relations with Kenya.  Walde made a statement to the police, but was not imprisoned because of his diplomatic immunity.  Kenyan police say the case is still under investigation.  The Vienna Convention allows Dutch diplomats to pursue the interests of Dutch citizens and businesses abroad in the most effective way possible, even if doubts remain as to legal certainty. .