I'm ignorant about this, but I'm surprised there isn't just some physical switch that just straight up airgaps all network routes going out of the country.
There is, so that's why you need to use Starlink as the exit. A Starlink terminal connects directly to a stattelite bypassing all local infrastructure. Unless Iran confiscates those terminals or shoots down those satellites, they can't block it.
Yes also typical disturbance noises seem to not work on these satellites otherwise they would've done it. probably due to them being LEO satellites. because they have stronger signals and that makes it harder for noise/jammers to overpower legitimate signals (higher signal-to-noise ratio).
