The Equilibrium, Computed — an Interactive Annex to Memorandum No. 7
The Roadmap to Ceasefire and Lasting Peace in Ukraine makes one engineering claim: the package is built as a Nash-style equilibrium — every actor gets enough of what it truly needs that cooperation beats defection. A claim like that is a condition on a payoff matrix, and a condition can be checked. The annex puts the memo’s levers on dials and lets anyone check it.
After the Checkpoint, the diplomatic wing gets the same treatment as the physics: from the metaphors back to the calculations. The seventeenth instrument rebuilds Memorandum No. 7’s Annex 1 as three live calculators. The matrix: each side holds the ceasefire or defects, and four dials — snapback severity (Annex 2), automaticity (the 48-hour no-veto trigger), guarantee strength (§4), and the relief ladder (§8) — decide which cell is the equilibrium. Press MEMO No. 7 and the peace cell is the only Nash equilibrium: even a betrayed party is better off holding, because the guarantees carry it. Press MINSK II and the matrix flips — both sides’ best reply is defection, which is the history. The ladder: Axelrod’s condition δ ≥ (T−R)/(T−P) computed live from the same dials, showing why the roadmap is phased — every rung raises the shadow of the future, and at the memo’s settings temptation falls below reward, so cooperation is the best reply at any horizon. The gamble: the Monte Carlo the memo cites, cast fresh in the browser — four thousand futures of continued war against the deal’s certain line.
The payoff numbers are not measured utilities and say so on every screen; the claim under test is structural — that peace is not the absence of temptation but a matrix in which temptation is the worse trade, buildable dial by dial. Real credibility is political before it is mathematical, and the memo’s own parameters (the X days, Y years, Z percent) are left blank for the parties to co-draft. The annex is that agenda made playable.