This is a function of how easy it is to do the banned thing, how easy it is to detect when it is being researched and what are the benefits of researching it.
Imagine as an example that we live in a world where there are no firearms, and we decide to ban their research and development. All three factors would be against the ban. It is relatively easy to make primitive firearms (all you need is metal working tools). It is hard to detect when someone is doing it (they can keep their firearms secret, and the tools and activity disguised as something else) and the firearm once developed will be of great benefit to whoever developed it.
So a blanket ban against firearms would be unstable. It wouldn't work.
Let's look at an other example. Nuclear weapons. They are much harder to create (you need a whole industrial project to develop the tech, lot of engineers, and lot of energy consuming processes), there are pre-cursor technologies you can monitor to have an early warning (uranium enrichment, centrifuges, etc), it doesn't have immediate benefits unless you also develop a reliable delivery mechanism for it.
And these are the factors while nuclear weapons don't proliferate everywhere. You can't buy them in the mall, smaller countries don't have them etc.
I don't know what the answer to these questions are for "mirror life" but the framework is the same.
How hard is to develop it? If a single dude in a shed can do it, there is probably no point banning it. It will happen sooner than later. If it requires coordinated effort from multiple research groups and industrial partners, then a ban might work.
How hard is detect when someone is developing it? Can they hide it? Is the process using common materials and equipment? Do they need to get stuff only people who develop mirror life would need?
But the final question is the most important: What do they win? If there is some military benefit to developing "mirror life" then we are lost, and it will be developed. If there is some big economic benefit a ban might work, but it will be an uphill battle. If there is no benefit to it, and it is just cool and interesting to do, it will be a lot simpler for a ban to hold.
It seems to me that to a degree nuclear weapons show some of the problems with a research ban. I think that it's possible that nuclear weapons are proliferating just very slowly. The problem seems to be that once someone engages in forbidden research, then their rivals feel the need to as well. E.g. we allowed China to get a nuclear weapon so India decided they needed one which led to Pakistan needing one. More currently, we allowed Israel to get nuclear weapons so now Iran is likely trying to get them.
It's also notable that the two instances where people gave up nuclear weapons, Gaddafi and Ukraine; have both ended poorly for the people who gave them up.
All this to say, I wonder if it might be possible to slow research on a subject but not to stop it completely.
It's unclear if Belarus and Kazakhstan really had nukes in the first place such that they could "give them up"—as with Ukraine, the nukes stationed there were Soviet nukes, controlled by Moscow.
South Africa does seem to be doing okay, though. It's not that likely to be invaded by Zimbabwe, and since the end of apartheid, a civil war is looking increasingly unlikely.
> Tokayev (...) went on to thank Russia for sending troops to help establish order.
> Russia's Defence Ministry stated that more than 70 planes were flying, around the clock, to bring Russian troops into Kazakhstan and that they were helping to control Almaty's main airport.
On the other hand:
https://en.wikipedia.org/wiki/Kazakhstan%E2%80%93Russia_rela...
> Kazakh leadership including Kazakh Foreign Minister Mukhtar Tleuberdi did not condemn the Russian invasion and abstained on the UN vote to condemn it, but at the same time they refused to recognize the Russian states of Donetsk People's Republic and Luhansk People's Republic.
> In addition to sending humanitarian aid to Ukraine, the Kazakh military increased spending and training. (...)
> Russia suspended shipments of Kazakh oil after Tokayev’s statements at the St. Petersburg International Economic Forum, where he stated that Kazakhstan considered the DPR and LPR as “quasi-state entities” and would not recognize them. On the other hand, in spite of some tensions, Kazakhstan's relations with Russia remain strong and mostly friendly, as shown by Tokayev's visit to Moscow in November 2022. (...)
> In 2022, Kazakhstan agreed to share the personal data of exiled anti-war Russians with the Russian government. In September 2022, Kazakh authorities detained a Russian journalist who was wanted on charges of "discrediting" the Russian military. In December 2022, Kazakhstan deported a Russian citizen who fled mobilization.
I'm no expert in foreign relations, but to me, this sounds like the relationship between the Trump administration and the municipal government of Portland, Oregon, not like the relationship between France and Germany, the relationship between Argentina and Brazil, or even the profoundly unequal relationship between the US and Canada. Tokayev can posture a bit about disagreeing with Putin, but Russia will punish him, and when push comes to shove, he depends on Russian military support to stay in power; and when Russian dissidents or draft dodgers show up in Kazakhstan, he arrests and deports them. (Contrast Vietnam-War-era US draft dodgers fleeing to Canada.)
Brazil holds the key technologies to develop it and the sixth bigger deposit of uranium (with only 30% of the territory mapped). The navy is even currently developing a nuclear submarine that will be totally based on local technology.
A nuclear submarine is also not what is meant by "nuclear weapon", although it is arguably a weapon and has the word "nuclear" in its name. The phrase "nuclear weapon" conventionally refers to "atomic bombs" and "hydrogen bombs", which are bombs powered by respectively fission and fusion. A nuclear submarine is just a regular submarine powered by a nuclear reactor. Brazil already has many nuclear reactors that are in some sense "totally based on Brazilian technology" and has for decades.
I only knew of the three commercial reactors, the third of them under construction for something like four decades and still far from done (and they are also mostly foreign technology AFAIK). So I went looking, and it does seem there are a couple of decades-old research reactors I didn't know about: https://pt.wikipedia.org/wiki/Lista_de_reatores_nucleares_Br...
I went to a state university in the US that had its own research reactor, and I thought their university hospital had another one, but it turns out they don't now if they ever did.
You unleash green too ensuring your targets liquidation in 6 weeks they inform you to share your own defense against it or get nuked tomorrow. You share it but it adapts and everyone dies.
OFC, if any leader worth their salt will respond with "Hell NO, if you threaten us again with that, or we find any sign it is released, we'll nule everything in your land and anywhere it is found. Even if a vaccine/antidote works for humans, destroying the animal & plant populations would just result in the surving humans to die slower of starvation.
Thinking about this for a few seconds, it is really pointless, and maybe one of the most serious examples of "Just because you can do it, think hard about whether you should do it". The answer is Fck NO. (And I'm almost always in favor of tech advances.)
If they somehow survive of course.
It actually makes sense to just go ahead and go to war with anyone who works on such weapons.
Research bans do not inherently work.
Treaties need enforced, and the Streisand effect and arms-race dynamic play into the game theory as well.
Also, there are numerous examples throughout history of people performing evil human studies; so while people may not have studied children falling from planes, people have studied equivalent things.
Someone's going to need to work it out, because if the problem of "how to ban existentially dangerous things" is not solved, eventually we'll be fucked.
And realistically, we're probably fucked, because humanity probably simply lacks the maturity to not fuck itself over at some point (e.g. because of the logic "if we don't do it someone else will" is scarily effective, and some people are just unhinged for really stupid reasons). We probably only made it this far because of external constraints limited what we could do.
Part of me thinks it may turn out that a that a full-scale nuclear war that knocks out industrial civilization (especially if it's followed by A Canticle for Leibowitz-style anti-intellectual social changes) may not be such a bad thing in the long run, if it buys humanity a few more millennia.
After understanding what "mirror bacteria" is I have one word and that's "Yikes"