The Hidden Market Risk Beyond Inflation as the Iran Conflict Escalates

Here's the big risk facing markets — besides inflation — as the Iran conflict drags on

As tensions between Iran and its adversaries continue to escalate, financial markets are grappling with a threat that extends well beyond the immediate concern of rising energy prices. While most investors have focused on the inflationary impact of potential disruptions to oil supplies in the Middle East, participants in the swaps market are sounding the alarm about a very different danger: the prospect that a prolonged energy shock could ultimately drag the global economy into a period of weakening growth and even deflation.

Traders in the interest-rate swaps market say the bigger fear is not that oil prices spike temporarily, but that sustained elevated energy costs erode consumer spending and business investment to such a degree that economic activity slows dramatically. "People are much more worried that an initial energy shock will bring about weaker economic growth and possibly deflation," one veteran swaps trader said. This concern is reflected in the pricing of longer-dated swaps contracts, which increasingly suggest that market participants expect central banks may eventually be forced to cut rates rather than raise them if the conflict persists.

The dynamic echoes previous episodes in which geopolitical disruptions to energy markets produced unexpected economic consequences. In the 1970s, oil embargoes initially fueled runaway inflation, but the subsequent demand destruction ultimately contributed to severe recessions. Analysts note that today's global economy, already strained by elevated interest rates and lingering pandemic-era distortions, may be even more vulnerable to such a sequence. A sustained rise in energy costs could tip debt-laden consumers and businesses over the edge, transforming what begins as a supply-side price shock into a full-blown demand crisis.

For policymakers at the Federal Reserve and other central banks, the scenario presents an especially difficult challenge. If energy-driven inflation proves temporary but the economic damage lingers, officials could find themselves caught between fighting short-term price pressures and supporting a weakening economy. Market strategists say investors should be paying close attention to swaps-market signals, which have historically been among the earliest indicators of shifting economic expectations. As the Iran conflict drags on with no clear resolution in sight, the risk of a growth slowdown — rather than persistent inflation — may prove to be the more consequential threat facing global markets.