Donald Trump is facing mounting criticism over the escalating conflict with Iran, as rising gasoline prices, disruptions in global oil routes and internal dissent within his administration raise questions about the strategic planning behind the military engagement.

The backlash intensified as energy markets reacted sharply to threats around the Strait of Hormuz, a critical artery through which a significant portion of the world's oil supply flows. Analysts say any sustained disruption to this corridor could prolong elevated fuel costs in the United States and destabilize broader global trade flows.

The political pressure has been compounded by a high-profile resignation within the administration, signaling unease among senior officials over the trajectory of U.S. policy toward Iran.

Critics argue that the administration underestimated both Iran's capacity to retaliate and the economic consequences of military escalation, particularly in energy markets already sensitive to geopolitical risk.

The surge in fuel prices has become one of the most visible domestic impacts of the conflict. Analysts note that diesel prices have risen sharply, increasing transportation costs for goods and amplifying inflationary pressures across sectors such as food and retail distribution.

The price increases follow market reactions to the risk of supply disruptions in the Gulf, where traders have responded to uncertainty over tanker traffic and potential mining of key shipping lanes.

Trump has sought to downplay the spike in energy costs, describing it as a temporary effect tied to geopolitical turbulence. However, critics contend that the administration failed to adequately prepare for scenarios involving prolonged disruption to oil flows.

Energy analysts say the mechanics are straightforward: threats to supply routes tend to drive immediate price increases, while declines, if they occur, often materialize more slowly.

At the center of the crisis is the Strait of Hormuz, where Iran has signaled its ability to interfere with maritime traffic. Experts warn that even limited disruptions could have outsized effects on global markets, given the volume of crude oil passing through the narrow waterway.

Reports indicate that military advisers had cautioned about the risks associated with Iranian capabilities in the region, including the potential to mine shipping lanes or target commercial vessels.

The political ramifications are also reverberating across Washington. Republican figures, including JD Vance, are navigating a complex position as they balance support for the administration with growing voter concern over rising costs and the prospect of a prolonged conflict.

Analysts say the administration's messaging has struggled to articulate a clear strategic objective for the conflict, leaving many Americans uncertain about its long-term goals.

Unlike previous military engagements that were preceded by extended public debate or congressional focus, the escalation with Iran unfolded rapidly, limiting the opportunity to build broader public consensus.

Foreign policy experts argue that comparisons to earlier interventions may have influenced expectations within the administration, particularly assumptions that military pressure could quickly reshape political outcomes.

Iran's geographic scale, military structure and network of regional allies have complicated those assumptions, contributing to a conflict environment that is more diffuse and less predictable than initial projections.