I'm at a lost on why you would use the word "ego" to describe Rudd? If anything, I would think he is a humble man attempting to do what is right for his country and its relations in world affairs.
http://news.brisbanetimes.com.au/breaking-news-national/rudd-a-pig-over-plane-food-hissy-fit-20090416-a85z.html
http://www.telegraph.co.uk/news/worldnews/australiaandthepacific/australia/5295572/Australian-PM-Kevin-Rudd-threw-a-wobbly-over-hairdryer.html