Global bond markets experienced a sharp reversal this week as the escalating conflict in the Middle East reignited concerns about inflation and prompted a reassessment of monetary policy expectations. The sell-off, which began Monday, erased the gains posted by global bonds earlier in 2026, marking the worst start to a year since the pandemic, according to financial analysts.
The initial response to Saturday’s military strike in Iran defied historical patterns. Typically, geopolitical turmoil drives investors toward the safety of government bonds, increasing demand and lowering yields. However, this time, investors began selling Treasury bonds, pushing yields higher. Kathy Jones, chief fixed income strategist at the Schwab Center for Financial Research, noted that stock and oil price reactions were less dramatic than anticipated. “Stocks were lower, but not maybe as much as people thought. Oil prices are up, about 6 or 7%, but maybe not the 10 or 15 or 20% that they had feared might happen,” she said.
The shift in investor sentiment stems from fears that a prolonged conflict could significantly increase fiscal deficits, forcing governments to issue more bonds to fund increased defense spending. If investors anticipate a flood of fresh bonds entering the market, they demand higher interest rates as compensation. This dynamic is particularly concerning given existing inflationary pressures. A report from the Financial Times indicated that the Middle East war adds to a growing list of conflict zones contributing to upheaval in the global economy.
The impact has been felt across international markets. Bloomberg News reported a global firestorm ripping through bond markets as soaring energy prices stoke fears of a fresh wave of inflation. Traders are now pricing in the prospect of higher borrowing costs, a trend confirmed by rising yields. The Australian Financial Review noted that government debt is no longer seen as a safe haven when price growth is accelerating.
The conflict’s impact on inflation expectations is a key driver of the bond market’s reaction. Schwab Asset Management highlighted that the situation has increased bond market volatility, influencing expectations for Federal Reserve policy and Treasury yields. While a complete reversal of Federal Reserve policy is not yet anticipated, the possibility of delayed or reduced rate cuts has become more prominent.
Analysts at Reuters suggest that the 10-year Treasury yield is expected to only gently drift upwards following the initial surge, but the overall outlook remains uncertain. Metrobank Wealth Insights too indicated that the rally in oil prices is diminishing hopes for Federal Reserve rate cuts.
As of Wednesday, the US and Israel continued military operations targeting Iranian assets. No official statement has been released regarding a potential ceasefire or diplomatic negotiations.
