U.S. Treasury yields moved higher on Wednesday, ending a three-day stretch of declines as oil prices surged and shifted attention back to inflation risks. The move in bonds came ahead of the Federal Reserve’s latest interest rate decision, a key event for investors tracking the outlook for borrowing costs.

Crude prices climbed after a renewed flare-up involving Iran, and that increase fed directly into market concerns about inflation. When oil rises sharply, traders often worry that energy costs could keep price pressures elevated, which can influence expectations for interest rates and bond yields.

The bond market’s reaction showed how closely investors are linking geopolitical developments and central bank policy. Higher oil prices can complicate the Fed’s inflation fight, even if policymakers are widely expected to leave rates unchanged at this meeting.

At the same time, traders are still watching the Fed’s guidance for signs of what comes next. While the market expects no immediate change in rates, investors remain alert to the possibility of another hike in the coming months if inflation risks stay firm.