The price of resilience: the ECB tightens into a war it cannot control

On September 10th the European Central Bank did something modest and, in doing so, something quietly remarkable. It raised all three of its key rates by a quarter point, lifting the deposit rate — what it charges banks to park cash — to 2.50%. This was the second increase since the United States and Iran began striking shipping, military and energy assets in late August, and Christine Lagarde, its president, called the decision a "no brainer", approved unanimously. The same press conference carried the stranger message. The economy, she insisted, is "proving resilient".

The oddity is in the sequence. A war-driven energy spike is a textbook supply shock, and the textbook says to look through it: a rate rise cannot conjure a barrel of oil or reopen the strait; it can only depress borrowing, hiring and spending to offset a price the central bank never caused. That is precisely the argument for doing nothing. The ECB chose the opposite. Its justification is the arithmetic of the headline. Euro-area inflation reached 3.3% in August, its highest since September 2023, and energy prices were up 14.3% on a year earlier; the bank now expects inflation to stay well above target for an extended period, arriving back at 2% only late next year. Lagarde put the blame squarely on the conflict in the Middle East.

Here the resilience stops being a compliment and becomes a licence. To be sure, the underlying pressure a central bank actually manages is easing: core inflation, which strips out energy and food, slipped to 2.4%, and services inflation fell to 3%. ING, a bank, calls the move an "insurance" hike, and 2.50% sits within the wide, contested range the ECB itself regards as neutral. This is tightening in the rhetorical sense more than the mechanical one — a gesture aimed less at cooling an economy than at proving that an institution with a 2% mandate will not be seen to tolerate 3% and more. The resilience is what makes the hawkish optics affordable: with growth in the euro area upgraded to 0.9% this year and 1.4% next, the council can tighten without visibly engineering a recession. It is spending a credible economy to defend a credible currency.

The market is doing the tightening

What the resilience buys is room, and what the bank spends it on is a war it cannot end. The 91% of economists polled by Reuters who expect the deposit rate to finish the year at 2.50%, and the 78% who expect it to hold there through mid-2027, line up against interest-rate futures that price two or three further increases. Lagarde would offer no direction, saying the council had not even debated a future path. The institution is effectively betting that the conflict fades before the economy does — while keeping every option open on the strength of that very resilience.

The market, meanwhile, is not waiting. Ten-year euro-area yields stand near 3.80%, and long-term yields across the single market have reached levels not seen since before the global financial crisis. Lagarde waved the repricing off as "not a euro-specific issue", a movement happening across the world. On that she is right, and it is exactly why the episode matters beyond Frankfurt. Long yields are the discount rate applied to every future cash flow; when they rise together globally, the present value of long-duration assets — growth stocks, distant earnings, unprofitable technology — falls in every market at once. A war in the Gulf reprices a portfolio in Ohio through a channel that never mentions a barrel of oil.

A loop no central bank controls

Add the currency, and the loop closes. The Federal Reserve under its new chairman, Kevin Warsh, is itself expected to raise rates, which tends to strengthen the dollar; a dearer dollar makes Europe's dollar-priced energy imports costlier still, feeding the very inflation the ECB must fight. Two central banks are tightening into each other's currencies, each exporting a slice of its pain. The dollar is part of the ECB's problem, and the ECB has no lever on it.

The deeper trouble is distributional. An energy shock is a tax on consumers, and its mirror is concentrated gain: Lagarde herself observed that refining margins made a strong contribution to inflation — a rent captured by a narrow set of processors in a tight market. A rate rise does not claw that rent back; it asks borrowers to foot the bill for price stability instead. For now, resilient growth lets the ECB do that while waiting out a shock it cannot resolve. It is a reasonable bet, and the reason this hike could equally be the last or the first of several the economy never quite earned. The credibility of the euro, and the price attached to it, now rest on a war the ECB does not control.