Brent crude futures climbed by $2.82, or 2.59%, to $111.64 a barrel at 0626 GMT, approaching a five-month high. US West Texas Intermediate crude rose by $2.24, or 2.31%, to $99.39. The gains reflected renewed concern that further attacks could threaten energy infrastructure and complicate the movement of oil across the region.

The latest escalation followed attacks by Yemen’s Iran-aligned Houthi movement on several targets in Saudi Arabia. Reuters reported that at least one person was killed and eight injured in an attack on a civilian airport in Dammam, while a drone strike on an oil field killed two people. The incidents raised fears that the conflict could broaden and create additional risks for regional energy production and transport.

The prospect of supply disruption matters because Saudi Arabia is a major oil exporter and the wider Gulf region plays a central role in global energy markets. Even when physical supply has not yet been interrupted, the possibility of attacks can increase the risk premium incorporated into oil prices as traders reassess the reliability of future deliveries.

Higher crude prices can benefit producing companies and countries that depend on oil-export revenue. However, they can also increase fuel, transport and production costs for businesses, while putting pressure on households through higher petrol, heating and electricity expenses. Economies that rely heavily on imported energy may face a particular challenge if elevated prices persist.

The latest rally also adds complexity to the outlook for inflation and monetary policy. If energy prices remain high, businesses may pass additional costs on to consumers, making it more difficult for central banks to bring inflation under control. Conversely, a sustained increase in energy costs could weaken consumer spending and industrial activity.

Security concerns are extending beyond oil markets. US officials told Reuters that the State Department planned to withdraw family members from several additional US diplomatic missions in the region, highlighting wider concerns about the security environment.

For investors, the immediate question is whether the latest escalation leads to sustained supply disruption or proves temporary. Oil prices are likely to remain sensitive to developments around Saudi Arabia, regional security and shipping routes. A prolonged rise would carry consequences well beyond energy markets, influencing inflation, trade costs and the outlook for global economic growth.