Because you said so, and I quote,
“at least it is intrinsically stable in the region.”
I stand by for you to walk back your key assertion.
The antecedent of “it” in this case is “Iran”. “Intrinsically stable” refers to a continuous Persian political and cultural presence that has been relatively undisturbed, even through Alexander, the Arabs, the Turks, the Mongols, and the Western colonialists.
I’m honestly not certain where I mentioned any of the other countries you listed.