Egypt under Sisi is being neutral/somewhat friendly to Israel, while under extreme pressure both economically and socially because of the large swathes of people inside Egypt that want to oppose Israel. Western surveillance technology is likely critical to them keeping the lid on things. I suspect that there are covert operations by smugglers/resistance groups inside Egypt working to keep Hamas supplied via cross-border tunnels but they can do nothing of scale to help Gaza's population.

Jordan is basically an even more cowardly version of Egypt, with a large Palestinian population that has to be keep repressed; maybe some covert operations by smugglers/resistance groups working on keeping West Bank fighters supplied but again, nothing of scale.

Syria under Jolani is very Israel-friendly, offering up all their military equipment to be destroyed. The Syrian coast is a different story but if they're doing anything, they're probably formulating a resistance to Jolani rather than doing anything to oppose Israel. I think the situation is not stable at all but Assad showed how you can keep plates spinning for a decade even under the godawful situation that Syria is in, so I wouldn't count on anything changing for the foreseeable future, and definitely not while Israel exists. It's been pretty darkly funny how the Kurds have just vanished after Assad was toppled. Very "my work here is done" of them. Maybe some of them were serious about wanting Kurdistan but in retrospect it was functionally just another vector destabilizing the region.

Lebanon is basically one nation state with two governments; southern Lebanon sees Hezbollah as basically legitimate while the north is increasingly under the dictates of a comprador government upheld by Western agents exerting social and economic pressure. The comprador government is trying to disarm Hezbollah with the aid of Israel to varying levels of success. Hezbollah is somewhat acquiescing to this disarmament so as to avoid further mass death in Lebanon, but they're also clearly trying to get the comprador government to join with them to take the fight to Israel again, which the compradors obviously do not wish to do. My tentative prediction is that the comprador government will eventually say that Israel can have everything south of the Litani (maybe not as literal annexation but a sort of "a permanent peace-keeping anti-terrorist operation with a joint mandate supervised by the Lebanese government and blah blah blah" thing that turns out to be functionally equivalent to an Israeli annexation), and this will be unacceptable to Hezbollah, and the organization is basically transported back in time 20/30 years to solely being an internal resistance movement to Israeli occupation (both military and via compradors) albeit with extensive underground structures and missile stockpiles with which to fight. The reduction (but probably not total prevention) of weapon smuggling to them via Syria will also prompt this material shift in how aggressive they can be; guns and drones are easier to smuggle than missiles.

I'm not very familiar with what's going on with Iraq but they don't have meaningful sovereignty over their own country at this point. They would sure love it if Israel and the US stopped flying over their territory to strike Iran, but can't do anything. On the flip side, Iran can also smuggle and fire things over Iraq and arm groups there.

Saudi Arabia and the rest of the gulf monarchies are still unable and/or unwilling to exert enough authority to stop the US from using them as barriers against Iranian strikes, and one imagines them as ostriches with their heads in the sand, shitting themselves, with refineries just waiting to receive Iranian or even Yemeni drones.

Yemen's geopolitical situation has remained remarkably stable despite hundreds of US and Israeli bombings, showing how Ansarallah has created durable social, economy, and military structures to resist imperialist aggression. They aren't capable of much, but the right missile in the right place can still do a lot of damage, and they seem to be pretty good at making missiles.

Turkey's government has been busy feasting on the entrails of Syria. There's a degree of enmity with Israel on this point, but it's clear that they're still friendly to eachother despite the kayfabe.

Armenia's government is probably tasking their greatest political scientists to find the worst possible move they could possibly make during the coming crisis and I'm excited to see what developments they'll find. Maybe we'll see them fire missiles at themselves or something.

Azerbaijan is probably hosting some Israeli drone strikes onto Iran but on the whole I don't think they're a significant player in this thing right now.

With the Central Asian countries that most people don't know exists (your Uzbekistans and so on), I have no idea what they're doing but they're probably just hoping they don't have to get involved.

Pakistan is in an interesting situation in regards to Iran, here's a comment on that that might be interesting.

Afghanistan seems to be keeping things together now that China and Russia are helping them out a little more. I think there have been rumblings that the US wants to get involved there again, but I imagine that's not the main focus right now. It's certainly not the direction I would choose to attack Iran from given the terrain.

Syria, Lebanon and Iraq can't even be said to be nation states at this point, they are broken shattered and hollowed out. They have no military or sovereignty and can barely function to just do day-to-day existence. They've all lost millions of people who have fled as refugees.

Egypt is just pretending nothing is happening. Jordan i'm sure is coordinating with everyone in their airspace and clamping down on any dissent, normal Jordan stuff. They're just gonna try to lay low I guess and hope Iran doesn't notice them facilitating everything