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They pretty obviously don't.
It's definitely true that nuclear weapons are very powerful and that having them ups the ante for an invader. But we've had a lot of experience recently concerning the limitations of being a nuclear-armed power and that's not reflected here. I agree with you about the issues with soft power but both in your original post and here you're using language that suggests that having nuclear weapons gives you some kind of immunity while Russia – the world's nuclear power – has been subjected to a conventional land invasion and have been struck within their borders innumerable times by Ukraine. Israel's nuclear weapons may have caused Iran to think twice, but it hasn't stopped them from repeatedly launching conventional ballistic missiles at Israel many, many times.
Deterrence was invented to deal with the problem of other people's nuclear weapons. (This is an exaggeration, but it's very common to see the word "deterrence" preceded by the word "nuclear.")
I don't disagree with everything you say: yes, the US is vulnerable to internal unrest, as all countries may be, yes having nuclear weapons does allow you to use them to effectively defend yourself, thereby making it more likely that attackers will not attempt to militarily conquer you in your entirety but they're not magic.
Presumably if the Iranians can enrich uranium once, they can do it again. Israel killing every single nuclear scientist and obliterating every nuclear facility might set them back a generation, and that might be long enough for the problem to become moot. But generally speaking, if Iran can do it once, they can do it a second time.
I could be wrong about this, but my recollection was that Iraq was never nearly as far along the "make nuclear weapon" tech tree as Iran was, and their reactor (the one destroyed by Israel) was constructed and serviced by France. I don't think Iraq had nearly the in-house expertise Iran does (Israel's campaign against Iranian scientists notwithstanding).
Secondly, Iran has relatively good relations with North Korea and might simply be able to procure functional nuclear weapons from them (I have no idea what North Korea considers sane or not).
But that's what would be required if our goal is to prevent Iran from ever developing a nuclear weapon using military force alone. Quite possibly boots on the ground could be avoided, but it would require, presumably, an indefinite persistent air interdiction of any nuclear capabilities.
Or how else do you propose to once-and-for-all prevent them from rebuilding their nuclear capabilities? The other paths are 1. overwhelming humanitarian disaster (such as nuclear weapons) of such magnitude as to turn Iran into a political non-entity, 2. some sort of deal, or 3. installing or allowing to be installed a new regime.
I think we're both on the same page here, but it won't be easiest for us to do it now, it will be easiest in probably one or two weeks or so.
You opened your original post saying that you were arguing in opposition to the "let the two parties sort it out" position, but it seems to me that you're happy to let Israel sort it out and your main concern is that they will be unable to "finish the job." What exactly do you think the US can do that Israel cannot?
It's true that the US has MOPs that may be able to penetrate some of the Iranian underground facilities. If they can't, we'd need to use nukes (which Israel already has). If Israel has airspace control over Iran, they can (I think) keep the bunkers closed indefinitely by bombing their entrances, so it's unclear that the US has a huge advantage over Israel in this regard. The main abilities the US brings to the table are
So what exactly do you think the United States should do?
I mention in my reply that strikes within a border are different than a conventional land invasion. Secondly, said Ukrainian land invasion barely penetrated the Russian borders before they were expelled. It was also a retaliation in an active conflict - likely to pull Russian forces off the front line - which colors it differently than, say, an unprovoked mass invasion of Russia. Put differently: If Ukraine was magically and decisively winning this war, and pushed the Russians back to the border, I seriously doubt they'd get much further than there, out of a very founded fear that Russia would use nuclear weapons against them. Russia has said they would use nuclear weapons if their sovereignty was threatened. While this was a veiled threat along the lines of "Ukraine and the occupied portions of it are part of Russia, so don't you dare take them back", I don't doubt it would ring very true if Russia proper was legitimately under threat of losing territory.
You can invade a country without a prolonged occupation. Once again, see the first Gulf War. We rolled over then-one-of-the-largest armies in the world in a month and then immediately pulled out. I mentioned I wouldn't be explicitly against killing their leaders and leaving, but thoroughly gutting the military and their nuclear stores/bunkers (very easy to do if you've conquered them and can walk right up!) and leaving the leadership humiliated would even be fine by me. It would leave a very credible threat in the Iranian government's mind that we could do it again, because we already did it when they had years to build up their defenses. I don't want to be involved in nation building because (this is a separate thesis of mine) modern militaries, at least the United States', seem to be incapable of totally subduing an enemy via mass bombardment (i.e. killing a shitload of civilians), or nation-building. I don't think the former is necessarily "what it would take", as I am against civilians dying, so blowing up all their major military and nuclear assets and making them toothless for a good long time would be as good a solution as any.
On this note, a large army would likely not be the primary thing we'd need to fight China if they up and decided a US invasion of Iran was the perfect time to strike. In the short term, it would be primarily a naval and air defense, with the biggest land target I can think of being Taiwan (who has their own army - and ideally we'd want to keep the Chinese marines from ever making a landing, making them secondary). I'm not saying an army couldn't or wouldn't become necessary in the long term, only that a land component would not necessarily be a huge limiting factor. A CSG? Maybe, but we do famously have many more than only one CSG. And as you mention below, Israeli air support may prove mostly sufficient in such a circumstance.
Obviously this is a developing situation. Since I made the original post, Iran has apparently come crawling back to the bargaining table since the Israeli air campaign so completely dominated them. I genuinely hope this puts a bow on the whole situation, and the US never needs to lift a finger to change this. As I said, I have skin in the game when it comes to American conflicts, and one less is fine by me.
The attitude was "let the two parties sort it out regardless of the outcome". The second part is what I take issue with. I have no need for an American flag to be on the wikipedia page for this conflict, I just explicitly and powerfully do not want a nuclear Iran - or any new nuclear country that has even a chance in hell of using them.
Taking a stroll on the moon is quite easy, if you've successfully travelled there by rocket. You just skipped the hard part.
Successfully invading Iran would be an insane clusterfuck, and would be the biggest Chinese strategic victory this side of the 1940s (followed shortly by a bigger one, conquering Taiwan).
I actually would have said it would be impossible to invade Iran period a week ago. but they've folded so hard I'll downgrade to "unbelievably expensive and profoundly wasteful".
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Yes, I agree with you there.
The United States and its allies did enter Iraq, but it never got within 100 miles of Baghdad. If Iraq had had a credible WMD program, it would not have been sufficient to neutralize it.
Yes, correct. But the US doctrine is to fight with air support, meaning that US munitions stockpiles would be degraded in an invasion of Iran (as would US missile interceptors given Iran's large stockpile of ballistic missiles). Obviously a sufficiently thorough destruction of the Iranian military by Israel makes that moot, but that hasn't happened yet.
SAME.
Sovereign states have the right to develop nuclear weapons, if they so choose, and invading them for doing so would be a violation of international law. Many of the next countries to develop nuclear weapons will likely be US allies (Saudi Arabia, South Korea, Japan, perhaps Taiwan and Poland; contrast with of course Iran and perhaps Belarus). That's part of why stopping a Chinese invasion is so crucial to US defensive strategy, as a successful Chinese invasion of Taiwan dramatically increases the odds of nuclear proliferation.
On the one hand, I understand the desire to limit nuclear proliferation. On the other hand, I think that the nuclear asymmetry arguably makes the world more unstable and more prone to violence.
Because nuclear weapons are, though not a magical item, a potent deterrent, the best method to prevent other countries from getting them might be to explicitly carve up the world into nuclear power blocs (US, Russia, China, India) and give the nuclear sovereigns explicit hegemony and dominion over the other nation-states. The nuclear sovereigns could agree to use their nuclear weapons against any country that attempted to develop or field any independent nuclear capability. They might even be able to develop a shared nuclear monitoring and weapons sharing framework that could gradually grow in time into the true planetary sovereign, the single nuclear monopower.
This would of course be a complete overturn of the post-WW2 global order, but under that current system unilaterally invading countries that decide to develop nuclear weapons is illegal. Doing so would freeze the number of nuclear powers at their current levels (and possibly reduce them), at the price of the destruction of the sovereignty of most nations on Earth – but you seem quite comfortable to ignore national sovereignty if weapons of mass destruction are in play.
Otherwise, if the United States wants to ensure a nuclear-proliferation-free Earth (I am not sure this is actually a good idea, but running with your goal here for a moment), it is presumably on the hook to (illegally) invade and de-nuclearize any country, which means that it is in the national interest of countries like China and Russia to proliferate nuclear weapons programs to hostile states, forcing the United States to bear the costs of intervention. (Of course the United States can play the same game, but doing so risks...proliferating the weapons!)
A quick response, as I'm mostly on board with your response (and I'm burning my night!):
This was because Iraq capitulated. The regular army had surrendered by the tens of thousands and only the Republican Guard remained. I don't mean they would walk right up or go unopposed - but had they chosen to do so, they could have. It was a common criticism of the war at the time that we did not go far enough (not even Saddam, just allowing the Republican Guard to escape/continue).
In this case, as we've agreed, the Israelis are doing quite alright in that regard (RIP F-14s). Not that I think we'd need no air support - despite anti-Israel concerns, neither the US or Israel is at the other's beck and call, and only a fool would assume there is no situation where US forces would need support - but the cost would be greatly diminished due to Israel's exceptionally successful air campaign.
I actually somewhat agree with your overall assessment. Rational actors will likely never use them unless pushed to the brink. And they contribute to a lasting peace. But my worry is that an increasing number of countries with nuclear arsenals greatly increases the odds that an irrational actor gets into power, or that poor safeguards are implemented. To separate my feelings from my (theoretical) policy suggestions: I am against any country nuclearizing. I am not in favor of world policing literally any country nuclearizing. But Iran, or as worse hypotheticals, Syria, or Sudan - those are problems. With the African continent in mind, I am counting my lucky stars that South Africa denuclearized before going through its current continually corrupt and often hostile decline. That would be another situation where the world (i.e. the US because no one else has power projection) would need to step in and make sure nothing went missing. That is my concern.
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