Guess what? Khan, Macedon, many others in the past and present DO WANT WAR.
That was the real root cause of World War I: the leaders of ALL
the principal combatant nations DID
want war. And the root cause of the situation that allowed Hitler to come to power was that most of those leaders, when the true horrors of war with 20th century WMDs came to light, didn't want to admit that they'd wanted war, and so they blamed it all on the nation that had been the most effective among the losers.