The Escalation Ledger

Five escalation scenarios over the next 14 days. Each carries an analyst prior, which four market indicators move to a posterior. A change of probability is stated in percentage points (points, and pp in the weekly entries), and a change of the 10-year Treasury yield in basis points (bp).

Analyst baseline

Overview

Tail: posteriors of Scenarios 3, 4, and 5, summed—
From the analyst priors alone—The three priors, summed
Added by the market indicators—
Change on the week—

This week

The tail reads 77.3 percent, the highest of the record, against 72.7 a week earlier. The analyst priors account for 0.0 points of the rise, those of Scenarios 3 through 5 unchanged, and the market values for 4.6: the VIX’s close of 25.64, the highest of the record, adds 8.98 points on its own, and Brent’s fall to $98.32 takes 4.13 away against the series’ December settle (3.25 against the January settle), the two taken alone and not summing in log-odds to the change together. The prior of Scenario 1 rose to 60 percent, above its earlier range, because the week brought its pattern one step removed, Guard fire at a U.S. aircraft answered by proportional U.S. strikes on air-defense sites on Qeshm rather than on naval assets, and that of Scenario 2 fell three points on election losses the Vice President attributed to the war and the President’s word of 4 November that he has no immediate plans to strike; none of the week’s events is recorded as an entry of Scenario 4.

The five scenarios

ScenarioPriorPosteriorLast week

Probabilities that each scenario occurs within 14 days. The scenarios are not exclusive, so the tail is an upper bound on the probability that one or more of Scenarios 3, 4, and 5 occurs.

Since April

Tail, percent

Aggregate stability of the five games, 0 to 100

Each line joins the observations from 16 April, weekly from 11 July. The dashed line is the sum of the priors of Scenarios 3, 4, and 5, the tail before the market indicators move it, so the gap between the two lines is what the indicators add. Aggregate stability is the reading of The Strategic Atlas.