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Brent fell more than 9% to $90.38 on Friday after Iran said the Strait of Hormuz was open during a Lebanon ceasefire. On Saturday Iran reversed the decision, saying it would block transit while the US blockade of its ports continued.
Trump said the blockade would stay in force until a broader deal was reached.
The reversal revives supply risk, so crude prices are likely to rebound from their recent lows. Renewed uncertainty keeps energy and fertilizer costs elevated for feed makers.
aljazeera.comJohn PowerApr 18, 2026After 656 past bullish geopolitics events, Crude Oil (Brent) moved a median +1.9% over 5 sessions (63% higher; middle half -2.7% to +6.6%), and +0.7% over 20.
After 626 past bullish geopolitics events, Crude Oil (WTI) moved a median +2.1% over 5 sessions (62% higher; middle half -2.3% to +8.5%), and +1.6% over 20.
After 250 past bullish geopolitics events, ULSD / Diesel moved a median +1.7% over 5 sessions (58% higher; middle half -3.6% to +8.7%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
Iran reversing the Hormuz opening on April 18 and the US blockade staying in force renewed supply fears, a plausible driver of a rebound in WTI after the April 17 plunge.
Documents the Friday plunge to $90.38 and the weekend reversal by Iran, giving context for the move and for risk of rebound.
