Genghis Khan insisted on laws holding rulers as equally accountable as the lowest herder. He granted religious freedom within his realms, though he demanded total loyalty from conquered subjects of all religions. He insisted on the rule of law and abolished torture, but he mounted major campaigns to seek out and kill raiding bandits and terrorist assassins. He refused to hold hostages and, instead, instituted the novel practice of granting diplomatic immunity for all ambassadors and envoys, including those from hostile nations with whom he was at war.