The launchers weren't on the edge of course, they're deeper in the country. That would be military suicide to have them right on the border, as you lose the layers of protection for close, low range threats like helos.
Except this is not what happened, nor could it over Kuwait at the time, because it was too far away.
https://en.wikipedia.org/wiki/TADIL-J
And also at least the satellite versions.
And all of which are part of the S300 systems EW package Iran possess, the Cobra V8 has a touted range of 250km.
Also been demonstrated now in Ukraine.
See also
https://www.armyrecognition.com/news/army-news/2026/iran-dep...