They weren't willing to destroy the world. You do observe that sometimes one's own propaganda can backfire, esp. if its runs over years, and create a "middle management" layer of zaelots who arent aware it was for show.

So one quite important feature of stabre-ratting systems is that you don't have regieme-change instability where "lower tier zealots" who have been propagandised their whole lives suddenly take power -- because they, like the public, may be unaware it was just for show.

You're just repeating decades of US propaganda to me. I know it all. This was just a TV show put on to defend the rise of two empires, the US and the USSR -- the claims about ideology, world-destruction, communism, capitalism, etc. are all propangada. The goal the entire time, of both nations, was to expand their spheres of influence to each other's borders and to contain one another.

Here, the near entirity of iran's foreign policy is -- just like that of the US, USSR (and many other nations) -- a containment strategy for an highly militarised adversary. If iran took any other approach, israel would have invaded far earlier.