In a way I feel sorry for this very silly boy, not that I condone abusive or threatening emails, but if you are leader of a country, you have to expect that sort of thing.
uk.news.yahoo.com/5/20100913/tuk-teen-banned-from-us-for-barracking-o-45dbed5.html
Banning from the country will only add to the problem. A true statesman could have invited him over to see how good the place was and what they are trying to achieve.
Cest la vie