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The risk of nuclear war, no end in sight in Ukraine

Published about 1 year ago • 4 min read

Welcome to Nonrival, the newsletter where readers make predictions.

How it works

  1. On Sundays, read the newsletter and make a forecast by clicking a link at the bottom.
  2. On Wednesdays, see what other readers predicted and how your forecast compares.
  3. Over time, you’ll get scores based on how accurate your forecasts are.

In this issue

  • Results from Sunday's forecast on the war in Ukraine
  • Breaking down the risk of nuclear war

Thanks for forecasting. Send feedback to newsletter@nonrival.pub.


No end in sight in Ukraine

How likely is a peace deal between Ukraine and Russia?

  • Nonrival readers' average forecast was a 19% chance of a deal by August 19 (the median is just 10%).
  • That mirrors Good Judgment Open, which also gives a 20% chance of a deal before August 19.
  • On Manifold, the market gives a 22% chance of a "lasting cease-fire" by end of 2023.

Unfortunately, it seems highly likely that this war will grind on. Political scientist Chris Blattman, whom I interviewed about the year-mark in Ukraine, has noted that most wars are short. But as one astute reader noted in their forecast rationale, of wars that last a year, most stretch on over more than a decade.

How your forecast compares

  • You didn't make a prediction by the Tuesday 9am deadline. Otherwise you'd be seeing your forecast here.

  • The average reader forecast was 19%.

What other readers said

Reader rationales

1%: Russia loves frozen conflicts, and their strategy is undoubtedly to simply outlast western aid and interest.
3%: For both Russia and Ukraine, the resolve is strong and the fighting this spring and summer will go a long way in determining which side has the stronger hand. Yet, I see this war as a mechanism for Russia and China, in particular, to size up the US and NATO military capabilities. If China assesses that conflict with the US and NATO is too high of a price, I think China will bear influence on Moscow to come to the negotiation table in good faith. However, if China feels that it can match up with the West from a military standpoint, then the Russia/Ukraine conflict will continue and I believe China will move on Taiwan.
5%: The power dynamics make it so that Russia doesn't feel it needs to settle. Settlement only comes from one thing: Putin feeling his position is threatened.
10%: It is highly unlikely the war which takes over 1 year will end based on an agreement. Furthermore, time looks short to be signed by August 19 2023. Analysis based on baseline from article : "Wars that end within a month last on average eight days, and 44 percent end in a ceasefire or peace agreement. Of wars that last over a month but less than a year, only 24 percent end in a ceasefire. When interstate wars last longer than a year, they extend to over a decade on average, resulting in sporadic clashes."
80%: I think the Russians are counting on further deterioration of the Ukrainian economy. GDP down almost 30%. Time on the Russians side

Breaking down the risk of nuclear war

How likely is it that Putin will use nuclear weapons, and what might make him more and less likely to do so? Those can seem like impossible questions to answer, but they're incredibly important. Last year, several forecasting platforms and groups published estimates on the likelihood of Putin using nukes.

Peter Scoblic, a nuclear expert and a senior fellow at the international security program at New America, took a different approach: He tried to break down that giant question into several more manageable ones. The result was the "Red Lines in Ukraine" project on the forecasting platform Metaculus, where Scoblic is director of nuclear risk.

“My initial interest was in developing a better sense of what effect US policies would have on the threat of nuclear escalation,” Scoblic told Nonrival. In addition to having forecasters tackle the nuclear question directly, the Red Lines project also asks things like: Will the US provide ATACMS (a tactical missile system) to Ukraine? And: Will Ukraine control Crimea?

These questions allow for conditional forecasting: If X happens, how likely is Y? For example, Metaculus forecasters currently put a 2% chance on Russia detonating a nuclear weapon in Ukraine this year. But if Ukraine controls a significant chunk of Crimea, forecasters put the risk of Russia using a nuke at 10%. And conditional on the US providing ATACMS, the risk of Russia using a nuke is estimated to be 5%.

“The ultimate hope would be that we can estimate not only the likelihood of nuclear use but we can provide valuable information to policymakers about the potential implications of policy decisions they make," says Scoblic.

But these conditional forecasts are tricky to interpret. They're not reflecting cause-and-effect so much as (hopefully) serving as an early warning system. The US sending ATACMS to Ukraine doesn't necessarily itself increase the risk of Putin using a nuke from 2% to 5%—that remains impossible to measure. But, to the extent one thinks crowd forecasting platforms can make accurate predictions, the decision to send ATACMS would suggest that the situation has changed such that the nuclear risk has risen. The hope is for forecasts like this to be one input into the policymaking process.

Metaculus forecasters' overall prediction of Russia using a nuke has, happily, decreased since the question launched last fall, from the neighborhood of 10% to 2%. "[Forecasters] believe that the use of nuclear weapons in Ukraine is less likely," says Scoblic. Whether or not those numbers are precisely meaningful for such an unpredictable topic, "at the very least it’s a metric of concern.”

Scoblic cautions, though, that that number might rise again as events on the ground change. And that's the point of the Red Lines project: to serve as a warning system for anyone monitoring nuclear risk.


Extras

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