If countries want to go to war with another .... I've often fantasized that instead of sending whole armies, each country just send their leaders in a loin cloth, cover them in oil and no weapons. The leaders would then be thrown in an enclosed cage to do battle to the death with their bare hands. If they don't do battle, the audience get to kill them with spears ... then the contest is continued by the next selected leader from each country. The contest is continued until one leader kills the other.