I once flew from Friedrichshafen to Frankfurt during the time that the World Cup football contest was being held. The Iranian team had been accommodated somewhere nearby and were travelling on the same flight - they were about the only other Business Class passengers.
What a very polite, quiet group they were.
But what was rather sad was knowing that the stunningly gorgeous Iranian girls, who travelled on the S-bahn which I was taking to the Hbhof (they were only going as far as the footie stadium to watch the match), would be locked in jail if they'd worn the same clothes in Iran. One of them was dressed in an Iranian flag and very little else - which would undoubtedly have caused the ayatollahs to have a coronary.
I suppose if your idea of diplomacy is to behave like John 'Lurch' Kerry or William 'Mekon' Haigh, then it's hardly suprising to learn that people loath your country....
