US Vows 'Economic D-Day' Against Iran Amid Oil Export Threats

Iran's government rejected incoming U.S. sanctions Saturday, calling them an illegal claim of authority over every U.N. member state. Treasury Secretary Scott Bessent is scheduled to unveil the package Monday.

• China buys more than 80% of Iran's shipped oil, per 2025 Kpler data.
• Only 4 commodity ships crossed the Strait of Hormuz on Thursday — none large crude carriers.
• 8 million barrels per day now move through the strait, down from 20 million before the war.
• Brent crude closed at $94.39 per barrel Friday, up more than 5% for the week.

Why it matters: The sanctions are designed to isolate Iran economically and could penalize any country or institution that continues doing business with Tehran.

• Bessent told CNBC the goal is 'the greatest coordinated economic isolation in the history of the world.'
• Helima Croft of RBC Capital Markets said Iran is already among the world's most sanctioned countries and questioned whether new measures will change its behavior.

How 39 sources split on this story

Where they split: The core dispute is whether tougher sanctions can alter Iranian behavior or merely harden a standoff that neither side is currently moving to end.

What’s next: Bessent's Monday press conference will spell out which countries and institutions face penalties.

• Iran is seeking new regional security arrangements, according to parliament speaker Qalibaf.
• Backchannel diplomacy involving Austria, Pakistan, and Qatar has shown no significant progress.
• Will China comply with U.S. demands or accept secondary sanctions to keep buying Iranian oil?
• What is the current state of Iran's nuclear program, given U.N. inspectors have been shut out since 2025?
• Could Iranian permission for Iraqi tanker passage signal a partial, negotiated reopening of the strait?