The Iranian regime being partially decapitated does not change prior behavior since 1979 or even current statements and support for those very fifth columns, terrorists and proxies. Which cause nothing but misery in the wider region and in those host countries.
Dialogue and reaching out has not worked 100's of times before since 1979, it will not work now when they are even more radicalized to the point that they are willing to kill upwards of 20.000 of their own people (protestors) just in January 2026 alone.
As we say, words are cheap, action is harder. Meaning what I wrote earlier, change your behavior on the ground in the region and once you do that, a hand will be extended to you and you MIGHT be invited, if that is your wish.
Otherwise forget about it. If this news is even remotely accurate, Iran gave assurances to KSA of a regime change in terms of policies in those select few war-torn Arab nations. Nowadays only the Yemeni (Houthi terrorist cult) and Iraqi (fifth columns - according to a law passed by the Iraqi parliament those proxies will have to disband by 30 September 2026)
https://english.alarabiya.net/News/...er-30-deadline-for-proiran-militias-to-disarm files matter in this regard.
Otherwise I am not against their inclusion (provided they change said behavior) because KSA (leadership, people etc.) would prefer a stable region which would enable KSA to fully focus on internal growth. Same priority that Turkiye has and other regional powers.
Ideally, EVEN some kind of deal with the Zionists in the region (by every power in the region) that would prevent conflict, would most likely be supported by everyone.
EDIT: Not including a notorious and disliked regional troublemaker in a defense pact as of today, is not kicking "the ones who are fallen", it is common sense until said behavior changes.
"Kicking the ones who are fallen" would be, if all 3 ganged up on Iran - which is not going to happen for 100's of reasons - some already given by officials from all 3 countries. .