A few thoughts on Iran and more general thought on anti-interventionism on the online-right:
Obviously, the Iranian government is bad. It, through various mechanisms, causes harm to America, to the Middle East, and to its own people. There are governments that could plausibly replace it that would be better. However, there is significant uncertainty about our ability to remove the current government, given our constraints, and uncertainty about what government would actually replace it if it fell. So, I'm not inclined to take a strong position on whether this is a good idea or not. Obviously, I hope it turns out well.
I've seen a lot of posts by anti-interventionists online who are taking a very strong and confident position, and so I thought I'd note some generic criticisms of the current iteration of anti-interventionism you see on social media today.
First, they clearly assign too much weight to the Bush wars when thinking about interventions. If we judge intervention success as the intervention having the outcome it was intended to have at roughly the cost (in lives, money, and time) it was expected to cost, then America has had a fair number of successful interventions throughout Europe, Latin America, parts of Asia, and parts of the Middle East. European nations have over an even larger span of geography.
The count of successes falls, but will still be significant, if we define success in terms of creating a state of affairs we wanted and that state of affairs never changing, even years down the line. However, I think this is not a very useful way of defining success. In general, we don't require this of a project, so it seems ad hoc to do so here. There's also an unjustified tendency to assume that if we intervene somewhere and it seems to work, but then that place becomes worse years or decades later, this is because of our intervention and means the place would have been better without it. There is often not enough evidence to support these sorts of conclusions.
A still worse criteria for success is whether you personally support the goals we were trying to achieve in the intervention. This criteria is often used implicitly but is obviously not a valid way of measuring how often interventions work.
In my view, a fair read of the evidence suggests that sometimes interventions work, and sometimes they don't, such that a strong generic bias against or for interventions as such is not a good way to think about the issue.
Second, I think anti-interventionists tend to have a view of the world that is implicitly biased against America. This is mostly true in two ways.
First, there is a kind of selective outrage where they hold the US (and, recently, Israel) to a higher standard of behavior than other nations and a kind of selective skepticism whereby they by default distrust claims of the US government (and Israel) but accept claims, even obvious lies, from other nations and groups.
Second, they seem especially apt to defend America's enemies and to deny that America even has real enemies, virtually no matter what a potential enemy says or does. Iran is a prime example of this. Many anti-interventionists find excuses for Iran doing everything from openly calling itself an enemy of America to killing American troops, all so as to deny that America has enemies (and so, global interests).
Third, many of the anti-interventionist takes I see have a very narrow conception of American interests. Often, they act as if something is only relevant to American interests if it has a direct, unmediated impact on American soil. Indirect effects through the global economy, or effects on the ability of America to carry out other operations elsewhere in the world, are ignored. Further still, you might think that America's interests are defined by whatever Americans happen to care about, and so the well-being of non-Americans could constitute part of America's interests. But they often seem to implicitly define the concept of interest so as to make this impossible by definition. This stance is normally not argued for, but rather taken as some kind of natural default or common-sense position. But it is neither.
Fourth, the current wave of anti-interventionists often think that everything America does around the world is a simple function of the interests of Israel. This again is partly due to an over-reaction to the Bush years. During those years Israel did have some usual influence on American policy, but this was not representative of American policy in general and even then they were not simply "wars for Israel". Often anti-interventionists are especially apt to endorse a basically fabricated history of America in the middle east whereby we say that America is only there because of Israel, has only ever cared about what happens there because of Israel, and has only had enemies there thanks to Israel. In every case this is so obviously false that it is refuted by a basic telling of the relevant history.
To reiterate, I'm not confident about how this intervention will go. It going well, or it going poorly, are both plausible. But the worst part of the current discourse seems to be the sort of hysterical anti-interventionism that has become popular online, so that is what I am commenting on.