Iran War Creates Lasting Financial Scars as Markets Brace for Prolonged Disruption

Energy Shock Triggers Market Upheaval

Financial markets are grappling with a harsh new reality as the war between the United States, Israel, and Iran enters its sixth week, creating what investors increasingly describe as a permanent shift in the global economic landscape. The conflict, which began on February 28, 2026, has led to the closure of the Strait of Hormuz—a critical maritime corridor that typically carries about one-fifth of the world's petroleum exports .

The 10-year US Treasury yield has surged from below 4% at the end of February to as high as 4.48% in March , while gasoline prices have leaped to $4.14 per gallon from below $3 just before the conflict began . This energy price shock is rippling through every corner of the financial system, forcing investors to reconsider fundamental assumptions about inflation, interest rates, and economic growth.

Economists warn that investors are now coming to grips with the likelihood of a prolonged war and its inflationary impact, as global oil supply constraints increase the probability of sustained price pressures . The market disruption extends far beyond energy, with all three major US stock averages heading toward negative territory for the month .

Bond Markets Signal Long-Term Damage

The bond market's response reveals the depth of investor concern about lasting economic consequences. Bond yields have been steadily rising as investors reprice the chances of rate hikes from central banks, with expectations of rate cuts from the Federal Reserve and Bank of England falling sharply . This represents a fundamental shift in monetary policy expectations that could persist long after the conflict ends.

The 10-year Treasury yield serves as one of the most significant interest rates for the economy, strongly influencing mortgage rates and borrowing costs for Americans and businesses . Financial analysts warn that the duration of the conflict will determine the ultimate impact on borrowing rates, with uncertainty bringing more influence on rates than any other factor .

Nearly a month into the war, government bond markets have sharply repriced as surging oil and gas costs stoke inflation expectations and force a rethink on central bank policy . The repricing suggests markets are preparing for a fundamentally different interest rate environment that could persist well beyond the immediate crisis.

Global Liquidity Crisis Emerges

Perhaps most concerning for long-term market stability is the emerging liquidity crisis affecting central banks worldwide. Foreign central banks' Treasury bond holdings at the Federal Reserve have dropped sharply since the beginning of the year as institutions need funds to raise liquidity . Central banks are also tapping into their gold reserves, with Turkey's central bank selling and swapping about 60 tons of gold worth $8 billion .

Nations are selling off US assets and gold reserves to cover escalating costs of oil and gas imports, creating a period of severe instability driven by energy shortages and surging commodity prices . This forced liquidation of traditional safe-haven assets represents a structural shift that could have lasting implications for global financial stability.

Gold, which has depreciated about 12% since the war began, faces pressure from a stronger dollar and rising Treasury yields, making the greenback-priced bullion less affordable while higher yields erode the non-yielding metal's appeal .

Preparing for a New Financial Reality

Investment strategists are warning that the current crisis may leave permanent marks on market structure and investor behavior. While history suggests geopolitical volatility is often temporary, a sustained oil shock could keep inflation risks alive and complicate the Federal Reserve's policy path, making diversification more important than ever .

Goldman Sachs analysts note that after 15 years of innovation driving portfolio returns, the average investment portfolio is now overweight innovation and lacks sufficient assets to protect against inflation, recommending an equal split between innovation assets, inflation protection, and safety investments .

The conflict's ultimate duration remains the critical unknown factor. While President Trump has suggested attacks could last four to five weeks, a conflict longer than a few weeks raises the odds of sustained economic pressure through higher oil prices, hotter inflation, and uncertain financial conditions . For investors, the war has already demonstrated that the era of low inflation and predictable monetary policy may be permanently behind us, requiring fundamental changes to portfolio construction and risk management strategies.