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Culture War Roundup for the week of June 3, 2024

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What are people's guesses for when the first nuclear weapon (since WWII) will be fired?

Could it happen before 2030? Before 2040? In our lifetimes? And between which actors, and in what context? And how would the likelihood of this change depending on political changes like upcoming elections (both in the US and elsewhere?) This isn't necessarily referring to a MAD scenario or global nuclear war, simply any non-test use of such weapons by a state or group for military purposes.

I'm far from an expert on geopolitics but my sense is that these are the regions where this is likeliest to happen:

1/ The Middle East

Since the start of the Israel/Gaza war, US and global efforts have been overwhelmingly focused on convincing Israel to abandon military action. Whether or not you agree with that, it's hard to imagine that Hamas/Hezbollah/The Houthis/Iran will look at this and feel anything but emboldened to continue attacking Israel in the near future (as is already happening with Hezbollah in the north). An extreme hypothetical scenario is one where Iran and its proxies continue making war on Israel while Western nations distance themselves more and more, refusing diplomatic support and eventually imposing economic sanctions including prohibitions on the sale of weapons. Backed into a corner and beginning to face existential threats, Israel launches one or more tactical nuclear strikes to change the situation on the battlefield.

With the Democrats increasingly hostile to Israel and in favour of conciliatory action towards Iran, and Donald Trump's likely intention to maintain his prior administration's forceful foreign policy in the region, I think this is the one situation where the choice of next US president will have the largest impact on whether we see nuclear weapons get used. I'm going to make the prediction that there's a 50% chance Israel launches a nuke in some capacity by 2030 if Biden is elected later this year Since posting, people have pointed out that tactical nukes aren't especially useful for, so instead I'll predict there's a 50% chance they launch a nuke by 2040.

2/ Ukraine

This is another obvious candidate for where we might see nukes used. This is something that has been talked about since 2022 although obviously nothing like this has come to pass. With greater resources and numbers of soldiers, it's hard to imagine Putin feeling the need to escalate the situation in such a manner, unless the West starts deploying their troops such that the course of the war radically changes.

This is another situation where the choice of next US president will play a crucial role, although it's less obvious IMO what effect this choice will have. Biden has been rhetorically and financially supportive of Ukraine, but has been cautious of engaging the US more deeply in the war, only recently permitting Ukraine to strike inside Russia using US weapons. Trump's friendly attitude towards Putin is well known, as is his skepticism towards foreign intervention, but he's also unpredictable and belligerent. I've seen the point made here that he may take the idea of the US "losing" in Ukraine as an affront to his pride and consequently decide to escalate.

3/ China and Taiwan

This feels less likely than the previous two examples, mostly because there's no active conflict in the region yet so there are still several further stages of escalation that would need to be crossed before nuclear weapons become worth considering for anyone involved. The US also seems to be taking steps to reduce their dependence on Taiwan. On the other hand, the US is interested in countering Chinese influence for reasons that go beyond the situation with Taiwain, and if China starts making SK and Japan worried enough to think about establishing their own nuclear programs, the US might start to find its credibility in the region tested.

4/ Pakistan and India

I unfortunately know almost nothing about the situation here, besides the fact that these are two nuclear armed neighboring states with a pretty unfriendly history, which felt like a good enough reason to add them to this discussion.

Israel launches one or more tactical nuclear strikes to change the situation on the battlefield.

Unless a nuclear war is already in progress, there is no such thing as a "tactical nuke". Using a nuke has massive strategic implications and so-called "tactical nuke" is just a low yield strategic nuke.

The distinction is that of goal, not necessarily of the inherent properties of the nuke. A tactical nuke has the paradigm of being a normal battlefield bomb, just bigger and more effective. A strategic nuke has the paradigm of wiping out an entire city, base, or resource. They both can serve both purposes but yield often does differ significantly when explicitly designed as one particular category of nuke.

If breaking the nuclear taboo isn't a strategic decision, nothing is.

The only thing Israel would gain from using a nuke over conventional weapons is the strategic value: A sign that they're willing to use nuclear weapons and a threat that the next move would be to cause massive casualties at the attacker's home front.

Words have multiple meanings and are hard. You're correct broadly. But specifically in a nuclear weapons context, a "strategic" nuke means something very different, and almost always has. The tactical-strategic distinction is partially a historical artifact because in the 50s and 60s and even sometimes later, there were indeed people who wanted to use tactical nukes in a tactical way notably distinct from strategic ones.

The classic way of thinking about it is: Is a conflict in that state of "regular" war? Or has it reached "total" war? If regular war: maybe use a tactical bomb if conditions are right (they often aren't, plus the taboo on top). If total war: maybe use a strategic nuke.

Size of nuke is a conceivable axis of escalation for a conflict, so many non-proliferation people specifically agree with you that even the mere existence of smaller bombs makes an exchange more likely, where the initiator might want to "send a message" but not actually commit to the wholesale destruction and death a nuclear bomb usually might entail.

We don't know much about Israel's arsenal, so it's hard to say how they have configured their bomb yields. Most presume that the bulk are in the lower range, but some reports say they at least have a couple large enough to have a significant EMP effect -- very high altitude burst for this purpose is a notable but less-discussed use of nukes.