International · September 14, 2026 · 1 min read

Bessent Unveils Iran "Economic D-Day" Sanctions, Holds Back the Hardest Hits

Published September 14, 2026 • Updated September 14, 2026

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Treasury's new secondary sanctions on Iran's trading partners stop short of the toughest measures, while oil had already priced in the standoff before the announcement.

**Treasury Secretary Scott Bessent unveiled sweeping new secondary sanctions** Monday targeting countries and entities doing business with Iran, calling it an "economic D-Day" — but held the toughest measures in reserve, with full implementation not expected until after the midterm elections.\n\n**Oil had already priced in the standoff:** Brent slid 1.29% to $93.17 a barrel and WTI fell 1.38% to $85.86 on Monday, giving back part of the prior two weeks' 5%-plus rallies tied to fears a prolonged deadlock could squeeze tanker traffic through the Strait of Hormuz, a route for roughly a fifth of global oil supply.

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