Global bond markets closed out a turbulent week under heavy selling pressure as investors reassessed the outlook for inflation, interest rates, and economic growth amid the continuing Iran conflict.

Government bond yields surged across major economies on Friday as traders reacted to mounting evidence that the energy shock tied to the war is increasingly feeding into consumer prices and broader inflation expectations.

US Treasury yields climbed to around one-year highs, while German, Italian, French, British, and Japanese government bonds also experienced sharp declines.

The broad selloff reflects growing concern that central banks may need to keep monetary policy tighter for longer or even resume rate hikes if inflation continues accelerating.

US Treasury Yields Reach One-Year Highs

Benchmark US 10-year Treasury yields rose to approximately 4.53%, reaching their highest levels since last summer.

The move came as investors increasingly priced in the possibility that the Federal Reserve may need to raise interest rates later this year to contain inflation pressures fueled by rising energy costs.

Shorter-term Treasury yields, particularly two-year maturities, also moved sharply higher during the week as markets adjusted expectations for future Federal Reserve policy.

However, longer-dated yields have now also accelerated upward, signaling deeper investor concern that inflationary pressures may become more persistent and economically damaging over time.

European Bonds Also Hit by Inflation Concerns

European government bonds came under significant pressure as inflation fears spread globally.

Italian 10-year government bond yields jumped nearly 9 basis points to around 3.87%, bringing their total weekly increase close to 14 basis points.

German benchmark Bund yields also climbed sharply, rising toward 3.11% as investors reduced exposure to longer-duration debt.

French bonds similarly weakened as traders reassessed the likelihood of prolonged higher interest rates across Europe.

Analysts noted that the rapid rise in crude oil prices since the outbreak of the Iran conflict has materially changed inflation expectations across global markets.

Energy Shock Fuels Inflation Expectations

One of the primary drivers behind the global bond selloff remains the sharp increase in energy prices.

Crude oil prices have surged more than 50% since the conflict escalated, creating substantial inflationary pressure across transportation, manufacturing, logistics, and consumer goods.

Recent inflation data from multiple countries has shown that businesses and households are increasingly experiencing higher costs tied directly to energy markets.

Investors now fear that inflation may remain elevated for much longer than previously anticipated, forcing central banks to maintain restrictive monetary conditions despite slowing economic growth.

Higher Government Spending Adds New Risks

Some analysts also warned that fiscal policy responses may further complicate inflation dynamics.

Governments across several countries are already discussing additional support measures to shield consumers from higher fuel and energy costs.

These programs could include subsidies, tax relief measures, or expanded spending packages aimed at protecting households and businesses.

However, investors worry that larger fiscal deficits combined with persistent inflation could place even greater upward pressure on long-term bond yields.

Jefferies strategist Mohit Kumar said markets are increasingly focused not only on inflation itself but also on the growing likelihood of wider government deficits resulting from energy support measures.

Yield Curve Steepening Signals Market Anxiety

Market participants also noted signs of a steepening yield curve, a dynamic in which long-term bond yields rise faster than short-term yields.

This often reflects investor concern about persistent inflation, rising borrowing needs, and long-term economic uncertainty.

Analysts believe the current steepening trend suggests markets are increasingly worried about the lasting consequences of the energy shock rather than viewing it as a short-term disruption.

The combination of inflation fears, rising deficits, and geopolitical instability is creating one of the most difficult environments for global bond investors in years.

Political Pressure Builds in the United Kingdom

In the United Kingdom, bond markets have also been affected by rising political uncertainty.

British gilt yields experienced extreme volatility this week as pressure mounted on Prime Minister Keir Starmer following heavy Labour Party losses in local elections.

Investors are increasingly concerned that political instability could complicate fiscal policy decisions at a time when the UK is already facing elevated inflation and slowing economic momentum.

The sharp rise in UK bond yields reflects broader global concerns surrounding inflation, fiscal sustainability, and economic resilience.