It's one thing to try to make the world think that your gov't is moderate. It's quite another thing to publicize a radical, violent gov't and moderate population.
The Iranians have done a bang up job of making Britain and the USA look guilty for having bleed nearly to death in order to win WW1 and WW2. Our President is the reason we have a generation of kids who think history started with them. Our leadership is too embarassed of our success.