Iran as sane as I am when it comes to ensuring survival?
Yes, it is. However I don't know of a correct way to persuade of this fact.
And do you really think that Russia and the USA will disarm most of their warheads and allow China to stockpile the most? I don't.
Nah, I don't think so either, but since their own nuclear arsenal is decreasing in quantity and China's own ABM defense is getting better, U.S. and Russia's own ABM defenses should keep up to maintain the strategic balance.
This is what you need to know.
ABM defense = protects you.
It's the most fundamental definition of an anti-missile shield.
I want this protection to proliferate.
We have reached a point of technology where - you fuck with us - you're dead, we're all dead. And now we're talking about WHEN ABM systems are actually useful - in the future - what's the point in making ones which aren't useful today.
For establishing the foundation that the future generation can inherit and improve upon.
I'll stake my life on it that it will never be a few ABM systems which "keep China's ambition in check".
What if it's not a 'few' ABM?
Maybe your and my strategic interest is different. My interest lies in replacing nuclear weapons with ABM defenses to a certain degree so that there will be less risk of causing irreparable damage to the world. A heavy ABM arsenal is as likely to deter a nuclear attack as a second-strike nuclear arsenal. It's more expensive, yes. But it does improve the chance of survival better than a nuclear arsenal, and it reduces escalation. ABM simply is a much safer method of defying nuclear power.
Well, it's all escalation as I'm sure you understand. One of their soldies shoots one of ours, we blow up a jeep of theirs, they blow up a patrol, we blow up a base, they blow up a battleship, and when everyone is stressed to fuck things will be evaluated, and it's MAD time. The reason no nuclear powers have ever had a conventional war? Fear of escalation.
Indeed. A strong ABM defense can also keep escalation in check. What China is really afraid of the U.S. is not really its force projection capacity endowed by its large amphibious and carrier groups; it's actually the second-strike-capable nuclear submarines and their 80+ aegis cruisers and destroyers. Improving U.S.'s ABM defense can help maintain the strategic deterrence without necessarily resorting to ramping up second-strike capability. And that's what I want.
You don't know just how powerful America's ABM defense is, do you?

Just put more Aegis ships in there, (invest in
more ABM obviously) and no Chinese missiles will get through the Pacific - and China will know this. And you don't need to use your own nuclear missiles, and the whole world stays safe.
Like I say. In a war with a properly armed nuclear nation, a missile shield is, given current technology, useless.
Which is essentially why we should keep improving it and establishing it, not ditching it.
Everybody knows that if you launch a nuke, everyone dies.
No, you don't. Right now China's nuclear force is not enough to completely destroy Europe or the U.S. However inevitably their nuclear arsenal is going to get stronger to suit their strategic needs. In this case you have 3 choices; upgrade your own nuclear arsenal; upgrade your ABM; upgrade your preemptive strike capability.
The one that
I will put most faith in will eventually be the ABM. It's simply because it's the least aggressive form of defense which therefore reduces escalation and collateral casualties. (deja vu lol)
That's why nobody has done it.
Nobody has done it
yet.
We don't need a shield for that to remain true, even if you do like the idea of the latest toys. ABM is a strategic deterrent? No - 2000 nukes pointed at your country is.
Bah. My point is, ABM
can become a strategic deterrence also,
if you only payed more attention to it. 2000 nukes can serve as strategic deterrence, yes. 2000 ABM can do just the same. Right now the U.S. has at least 3000 strategic ABM missiles, but many of them are spread all over the place right now, so it's even more important that the U.S. keep producing more ABM so that it can consolidate its defensive hold better, especially because China's nuclear arsenal is still growing.
My understanding is that it's more of a back up plan for rogue states, such as Iran. There is no shield that can thwart an attack from China/Russia.
This is where you are fundamentally wrong. There
is a way to produce a shield that can thwart an attack from China or Russia aside from nuclear deterrence, and that's a fact. It's technologically, logistically, scientifically, economically, politically, and religiously possible. You just aren't doing it.
That's a load of rubbish. Missile shields only INCREASE tensions as it is restarting the cold war. The european view of America and it's missile shield is a general GTFO from what I've experienced.
Yeah, well, as if it's the average people's perception which determine international politics lol
What matters is the Polish and Czech government's perception, not it's average citizens. If the U.S. wants more support from these countries (which is they actually want) they want to give more concern to their strategic interests. Their strategic interest lies in protection from more powerful players like Russia and China, not small countries like Iran. Eastern European countries feel more threatened by Russia, and will feel more threatened by China in the future as it grows up, than they'll ever feel threatened by Iran, because their perception of Iran already rules Iran as a fundamentally weak country compared to Russia or China.