• A confidential U.S. intelligence assessment indicates Iran could withstand a naval blockade of the Strait of Hormuz for 90–120 days, and potentially longer, using oil stockpiles and alternative smuggling routes.
  • Iran is rebuilding its missile and drone arsenal during ceasefire periods, maintaining significant military capacity despite sustained U.S. and Israeli strikes.
  • Prolonged disruption at the strategic chokepoint risks sharp oil price increases and broader geopolitical shifts, with global energy markets on edge.

The Washington Post reported Thursday that a closed-door U.S. intelligence assessment paints a more resilient picture of Iran’s ability to weather a naval blockade than the White House has publicly suggested. According to multiple officials familiar with the document, the analysis concludes Tehran could sustain itself for at least three to four months, and possibly longer, by drawing on strategic oil stockpiles and leveraging established smuggling networks. The assessment comes as the U.S. Navy maintains an enhanced presence in the Persian Gulf, with the stated aim of severing Iran’s oil revenue.

“The White House has argued the blockade is inflicting severe economic pain, but the intelligence community’s view is that Iran has enough flexibility to avoid a sudden collapse,” a person familiar with the assessment said. Iran’s economy remains under pressure from sanctions, but the analysis suggests it has built up buffers over years of confrontation, including alternative export routes and stored crude reserves.

Separately, U.S. and allied intelligence indicate Iran has been using lulls in hostilities to accelerate production of missiles and drones, effectively replenishing stockpiles depleted by earlier strikes. “They’re not just rebuilding; they’re innovating,” one official noted, pointing to new guidance and warhead designs observed in recent tests. The findings challenge the narrative that sustained military action has crippled Iran’s offensive capabilities.

For global oil markets, the stakes are immediate. The Strait of Hormuz is the world’s most critical energy chokepoint, with about 20 million barrels of crude and petroleum products passing through daily. Any prolonged disruption would likely send prices soaring. Analysts warn that a sustained blockade, even if only partially effective, could trigger emergency releases from strategic petroleum reserves and accelerate diplomatic efforts to de-escalate.

“The resilience of Iran’s economy and military is a factor that the market may be underpricing,” said a geopolitical risk analyst. “If the intelligence is correct, we could be looking at a protracted standoff, not a quick resolution.”

Efforts to reach the White House for comment were not immediately successful. The CIA declined to comment on intelligence matters.

Correction: An earlier version of this article misstated the timeline of the assessment’s conclusion. The period is 90–120 days, not 120–150 days.