The CIA had supported coups in many countries yet these countries have not kidnapped 50 diplomats, that's probably the single worst thing you can do diplomatically.

Countries as religiously deranged as Iran are close US allies (Saudis), Iran had many chances of changing that in the last 40 years.

Also, that popular 50s coup story of bad imperialists vs good natives does not only seem too simple to be true, it is