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Oil Prices Hit One-Month High as US Reinstates Iran Naval Blockade

economy-finance · 2026-05-04

On Tuesday, oil prices surged to a one-month peak following the announcement of a naval blockade of Iranian ports by U.S. Central Command (CENTCOM), set to take effect at 4 p.m. ET. Brent crude increased by 3.81%, reaching $86.47 per barrel, while U.S. West Texas Intermediate rose 2.75% to $80.29. President Donald Trump declared the blockade on Truth Social, implementing a 20% charge on cargo passing through the Strait of Hormuz. This action came in response to an Iranian assault on a commercial vessel, which led to U.S. strikes on Iranian targets. Iran then retaliated by attacking supertankers and U.S. military assets, resulting in an 85% decline in shipping traffic through the strait. Ongoing negotiations involving Oman, Qatar, and Pakistan remain uncertain.

Key facts

  • Brent crude rose 3.81% to $86.47 a barrel, highest since June 12
  • U.S. West Texas Intermediate rose 2.75% to $80.29 a barrel
  • CENTCOM announced naval blockade of Iranian ports effective 4 p.m. ET Tuesday
  • Previous blockade from April 13 to June 18 redirected over 140 vessels
  • President Trump announced blockade reinstatement on Truth Social
  • Trump declared 20% fee on all cargo transiting Strait of Hormuz
  • Iran attacked commercial vessel on Saturday, prompting U.S. strikes
  • UAE confirmed Iranian cruise missiles hit two oil tankers, killing one Indian seafarer

Entities

Institutions

  • U.S. Central Command
  • CENTCOM
  • Kpler
  • Citi
  • CNBC
  • NPR
  • Reuters
  • NATO
  • United Nations
  • The New York Times
  • Barron's
  • S&P 500
  • Nasdaq
  • Kospi
  • SK Hynix
  • Nvidia
  • Micron Technology
  • AAA
  • Dow Jones Industrial Average
  • Nasdaq composite
  • US Navy
  • Iranian news agencies
  • US military

Locations

  • United States
  • Iran
  • Strait of Hormuz
  • Bahrain
  • Jordan
  • Oman
  • Qatar
  • Pakistan
  • Turkey
  • United Arab Emirates
  • Omani waters
  • Kuwait
  • South Korea
  • Persian Gulf

Sources