A spike in oil prices could keep CPI inflation above 3%. In this environment, the Fed cannot cut rates to support a weakening economy, as doing so would spook bond traders, risk higher long-term rates, and make financial conditions even tighter, effectively taking them 'off the table.'

A sustained rise in oil prices presents a dual threat to investors. It can simultaneously increase inflation—hurting bond prices—and slow economic activity—hurting stock prices. This combination, known as stagflation, can cause both key asset classes to fall together.

Markets pricing in ECB rate hikes after an energy shock is flawed. Higher energy prices are a negative growth impulse for Europe, hurting terms of trade and consumer spending. Hiking rates would only worsen the downturn, making European cyclicals and the Euro vulnerable regardless of policy.

The inflation market's reaction to tariff news has fundamentally shifted. Unlike in the past, recent tariff threats failed to raise front-end inflation expectations. This indicates investors are now more concerned about the negative impact on economic growth and labor markets than the direct pass-through to consumer prices.

The impact of an oil supply disruption on price is a convex function of its duration. A short-term closure results in delayed deliveries with minimal price effect, while a prolonged one exhausts storage and requires triple-digit prices to force demand destruction and rebalance the market.

It's the volatility and unpredictability within the supply chain environment—rather than the magnitude of a single shock—that can dramatically amplify the inflationary effects of other events, like energy price spikes. This suggests central banks need situation-specific responses.

An oil supply shock initially appears hawkishly inflationary, prompting central banks to hold or raise rates. However, once prices cross a critical threshold (e.g., >$100/barrel), it triggers severe demand destruction and recession, forcing a rapid policy reversal towards aggressive rate cuts.

Contrary to popular belief, the current upward inflationary pressure is a net positive for equities. It is not yet at a problematic level that weighs on growth, but it is high enough to prevent a more dangerous disinflationary growth scare scenario, which would trigger a full-blown "risk-off" cascade.

The European Central Bank is expected to lean hawkish in response to the conflict's impact on energy prices. Historical precedent from similar crises suggests their internal analysis frames such events as an inflationary threat first and a growth threat second, meaning they are unlikely to counter market expectations for rate hikes.