America, Britain and Israel each are representative democracies. Iran and Co. are not. I think we define "evil" somewhat differently.
If Iran can demonstrate a multistage nuclear delivery system there will not be peace. There will be war. Iran was safe from attack until they attacked with their proxies. They started and/or green-lighted the present mess.
Israel has had nukes for decades. Nobody in the Middle East is afraid. If Iran gets nukes, everyone around the world is afraid, because they're psychos. A freaking death cult. And if Iran gets nukes, Saudi Arabia will purchase nukes from Pakistan and/or India. Shoot, even from North Korea.
We're closer to peace right now, as Iran has lost its ability to misbehave and project power via its proxies. And they've shown themselves to be paper tigers with their direct actions on Israel. The leaders in Iran are worried about Israel externally, and their own people internally. Totalitarians don't get voted out. Rather, they end up with their head on a pike (not a fish).
Iran has not lost power. Iran in fact (according to Peter Zeihan and John Mersheimer) has the ability to tank the global economy if they want. Iran has strategic control over the Strait Of Hormuz and has the ability to easily destroy the oil refineries in Saudi Arabia, Kuwait and the all the US / Israeli aligned gulf countries. In fact, the is the plan if the US and Israeli strike Iranian refineries. Iran will wipe of the entire oil product in the Mideast and the world economy will enter a great depression. This is why the US and Israel avoid those oil production areas.
Iran is the rational actor here. After Israeli violated international law and committed multiple crimes murder on Iran's turf, Iran had to respond. Because Iran is responsive to the will of its people and the people demanded a response, Iran had to do something. Iran contacted the Unites States (for both Iranian responses) and informed the US and Israel where and how their responsive attacks would be. You probably think that the US and Israeli just shot down the Iranian drones and missiles out of pure superiority? No. The US and Israel were informed about all the details of the coming strike. (This is widely available information by the way) They were ready. The Iranians did not want to escalate. They have not wanted to escalate.
As for democracy.. That is a name the west gives its own process. But every country has their own way. It is not up to us to judge them. What works for one culture will not work for others. Americans need to stop acting as if we have it all figured out and everyone else is just backwards. If and when the Iranian people want a system like ours they will fight for it. Once it is fought for it will be earned. They will then have a cultural identity that is ready for it. For now, they have their own system.
Ever notice how US states have different laws? Different people in different places have different identities and needs and desires, so the states should reflect those differences.. So it is the same for countries. There is no one size fits all economic system, religion or culture and especially power structure. They are different because the people of the world of different. It is not up to one group of people to impose their worldview on others.
Russia I would argue cares more about their people than US leaders care about theirs. You cannot fool me on this issue. I have well over a hundred Russian friends. They do not feel the everyday government presence inhibiting them like we do. I would argue that in the US we have more negative interactions with government control that Russians do. They are living their lives as happily as we do. And their government, despite having a different power structure responds to the people's needs better than our government does.
it is eye opening to realize that you and I are the bad guys. We are ones allowing our corrupt and imperialistic government to ruthlessly wage unending war around the world.
As for Israel they do not use their nukes because nuking a country a few hundred miles away is tantamount to nuking yourself. If the Israeli people were so repressed by their government Bibi would be in prison now and there would be a chance for peace. Bibi is consolidating power, changing their constitution so he is the supreme leader.