atatürk's success naturally depends on the almost a century long efforts that preceded him , things like Western like natural sciences based education , which used to happen in the madrassas and the like in the ascendant days of Muslim Powers . And a recognition that there was no salvaging of the Ottoman Empire . (Iran would carefully observe what the Ottomans were doing and they still do with what happens due West of theirs .) And with the current status of the world and the like and not as an Iranian to boot , ı would offer that Iran's current status does a lot to keep the world in peace . Sad for the Iranians , but other forms of Goverment might have got them invaded already .
I highly doubt "other forms of government would have got them invaded already." I'm an American and was a teenager throughout most of the Iraq war, so I remember it well and was old enough to understand politics and "the real world" at the time and the implications of the event...
it didn't take long before people were absolutely sick of the Iraq war. Iran is 3 times larger than Iraq, and unlike Iraq features lots of territory much better suited for guirella warfare such as mountains, forests, hills unlike the mostly flat desert terrain of Iraq. The cost and casualties of a war with Iran (to try to invade the country and hold it for any prolonged amount of time) would be astronomical. I don't think the current US even has the manpower for that. They would either need to install a draft, something that would be wildly unpopular, or have far more allies to join the coalition than they did in Iraq.
If the Iranian people were to topple their current government and a populist strongman were to emerge out of it (kind of like what happened with the French revolution and Napolean) then all of what I'm saying would be entirely feasible. maybe not likely, but it would hardly take a miracle. Their current government is pretty unpopular with the Iranian people. Especially the younger ones who are less religious and conservatives. Time is not on the side of the regime meaning they either have to make reforms or face complete collapse at some point.
It's worth noting that even if this were to occur (a successful revolution and regime change) it is hardly a guarantee that the Iranian people universally would want a more liberal, secular government.
America successfully had a revolution from the British (the largest and most powerful of the world at the time) but the colonies were very divided at the time of the revolution. Only one third of colonists actually wanted to rebel, one third wanted to stay with the crown, and one third were indifferent. Plenty of times when revolutions happen, not everyone was revolting for the same reason, or want the same change. They are simply unified by wanting to end their current regime but nothing more, necessarily.