Kyiv now has one open bridge out of six. Russia hit two of them this week, the city closed the other three, and France 24 reported on Saturday that a further major crossing had been struck, which is why the Dnipro has become a ration line for the capital's traffic.

Zelenskyy's reply, reported by Euromaidan Press, is to hit Russian oil refineries harder. The reply is addressed to a ledger in Moscow.

Russia's 2027 plan, according to media reports, raises military spending 27 percent, the highest level of the war so far. A budget of that shape needs a revenue line that rises with it, and in Russia that line runs through oil. A refinery sits in the middle of the chain, between crude that the Finance Ministry can tax at the wellhead and the fuel that Russian drivers, farmers and exporters need at the pump, or, more precisely, between the tax the state collects and the product it must still deliver at home. A strike on a refinery interrupts the second without touching the first, and the domestic shortage is what the government then has to explain.

The two campaigns therefore sit on different kinds of account. Russia's strikes on the bridges raise the cost of living in one city, and Kyiv can route around them, slowly, with the one crossing left. Ukraine's strikes on refineries land on the Russian state's fuel supply, which it cannot route around in the same way, and which it must keep supplied while paying for a war budget 27 percent larger.

Neither side has yet shown what its strikes buy. Kyiv's residents are already carrying the cost of the bridge campaign, and Russian drivers have not yet been shown to carry the cost of the refinery one. The Finance Ministry's October oil revenue figures are the first place the refinery campaign could register on Moscow's books.