The European Central Bank is edging towards caution rather than conviction. For now, the instinct in Frankfurt is to leave rates unchanged later this month and postpone the more uncomfortable question: whether the war with Iran has already inflicted enough damage on growth, supply chains and inflation to justify a fresh monetary response. That hesitation is not ideological. It is born of memory. The ECB knows what it looks like to react too late, as it did after the 2022 inflation shock. But it also knows what it looks like to react too quickly, as in 2011, when rate hikes delivered in the middle of a sovereign debt crisis had to be hurriedly reversed. That double failure now hangs over every conversation. The institution is once again trying to avoid being both behind the curve and on the wrong one.

For the moment, policymakers appear inclined to wait. The argument is simple enough. Financing conditions have already tightened. Energy prices have jumped. Growth forecasts are being cut. Demand is weakening. The available data before the ECB’s meeting on 29 and 30 April will not offer anything close to certainty. They will not yet tell us whether the shock from the Middle East is a temporary inflation flare-up or the beginning of something broader, more persistent and more corrosive. That is the central problem. Europe is being hit from both sides at once. Inflation rose to 2.5% in March, largely due to the energy shock. But growth is also deteriorating, and companies are already preparing for softer customer demand, bruised by higher costs. In other words, this is not a neat inflation story. It is a stagflation risk in embryo. Christine Lagarde has tried to capture this dilemma with the usual central-banking formula: total agility. It sounds elegant. It mostly means the ECB has no wish to commit itself while the ground is still moving beneath its feet. Isabel Schnabel has said there is no need to rush. François Villeroy de Galhau has argued that focusing on April is premature. Even Kristalina Georgieva at the IMF has warned that central banks should resist the reflex to tighten too quickly, as doing so could risk further damage to already fragile economies.

Markets, however, are less patient. Investors still lean towards the view that the ECB will ultimately have little choice but to tighten, and they continue to price in two quarter-point increases this year. That tells its own story. The market is no longer asking whether the war matters. It is asking whether the ECB is once again underestimating how long the inflationary damage could last. That concern is not fanciful. If the conflict drags on, the inflation shock will not remain confined to oil and gas. It will seep into transport, industrial inputs, food systems and expectations. And once inflation expectations start to shift, central banks lose the luxury of waiting. The ECB’s own severe scenario already points to inflation peaking above 6%. That is not a forecast, but a reminder that tail risks are no longer theoretical.

Still, the hesitation in Frankfurt is understandable. A rate hike this month would offer little immediate relief to energy markets, while sending a strong signal to an economy already struggling to absorb the shock. Europe is not the United States. It has less energy resilience, weaker momentum and less fiscal room in many member states. Raising rates into a geopolitical supply shock may satisfy orthodoxy, but it would not produce more gas, reopen disrupted shipping lanes or revive battered household confidence. So the ECB waits. Not because the danger is small, but because it is still too early to know which danger will dominate. Tighten too soon, and the Bank risks choking an economy already losing altitude. Wait too long, and it risks watching another inflation cycle become embedded while it speaks in the language of prudence. This is where Europe now stands: caught between the memory of past mistakes and the possibility of making new ones. The real message is therefore less reassuring than the official posture suggests. The ECB is not on hold because the shock is under control. It is on hold because the shock is not yet readable. The war has not produced clarity. It has produced fog. And in that fog, Frankfurt is choosing delay over error, hoping that the data will eventually tell it which fire is the real one. That may prove wise. Or it may prove, once again, that in Europe, monetary policy often arrives just after it is most needed.