WTI Tumbles 5.7% to $75.76 as Trump Cancels Iran Strike and Bessent Signals Deal Progress

West Texas Intermediate crude fell to $75.76 per barrel on Tuesday, down $4.58 from Monday's close of $80.34, per TradingEconomics. That represents a 5.7 percent single-session decline. Brent crude tracked lower to $79.64 per barrel, a loss of 4.9 percent on the day, per OilPrice.com.

What Moved the Market

President Trump canceled a planned military strike on Iranian energy sites, per OilPrice.com. Treasury Secretary Scott Bessent then indicated that deal negotiations with Iran could begin this week, per TradingEconomics. Qatar joined as an intermediary, with Rigzone reporting Tuesday that a short-term USA-Iran agreement appeared to be gaining traction. The combined diplomatic signal removed a large portion of the geopolitical risk premium that had supported oil prices through July.

Physical Markets Signal Ongoing Disruption

The physical evidence for de-escalation is thinner than the price move implies. Only three tankers transited the Strait of Hormuz on Monday, down from seven on Sunday, per OilPrice.com. Tanker transits at that level are near two-month lows. U.S. Central Command told CNN it was actively seeking "new creative and unconventional ways to pressure and punish Iran," suggesting military options remain open even as diplomacy advances.

Western Canadian Select and the Differential

Western Canadian Select was priced at $67.99 per barrel as of Monday's close, per OilPrice.com. That placed WCS at a $12.35 per barrel discount to Monday's WTI close of $80.34. Canadian heavy oil producers including Suncor Energy and Imperial Oil price their output against WCS, not WTI. WCS pricing lags WTI by hours to a full trading session, meaning producers may see realized prices narrow before Tuesday's WCS quotes fully reflect the move.

OPEC+ Production Adds Downward Pressure

Kuwait completed its portion of the OPEC+ output cut reversal on Monday, per OilPrice.com. That adds barrels to a market that is simultaneously processing Iran de-escalation signals. Germany's energy demand fell 1.9 percent in the first half of 2026, OilPrice.com reported, a sign of demand destruction at elevated price levels. Dutch TTF natural gas futures fell 4 percent after Trump's announcement, signaling that markets expect more LNG traffic through Hormuz if a ceasefire holds.

How Far Prices Have Retreated From the July Peak

WTI closed July at $84.67 per barrel, booking a 20 percent monthly gain driven by the Iran conflict, per Oil Authority's prior reporting at WTI and Brent Cap July With 20 Percent Monthly Gain. Tuesday's intraday level of $75.76 puts WTI $8.91 per barrel, or 10.5 percent, below that July closing peak. TradingEconomics places its Q3 2026 WTI model forecast at $87.14 per barrel, a level that assumes the Iran conflict persists through the quarter. A verified ceasefire would require markets to revise that baseline materially lower.