A diplomatic pause in Washington has sent crude prices tumbling, with Brent futures plunging to their lowest point in three weeks. The market's sharp reaction came after US President Donald Trump opted against a fresh military strike on Iran, choosing instead to pursue a swift agreement that could unlock additional Gulf oil supplies. Main Developments Monday's trading session saw front-month Brent futures drop $6.35, or 7 percent, settling at $83.77 per barrel. US West Texas Intermediate crude followed a similar path, falling $4.33, or 5.1 percent, to close at $80.34. This marks Brent's weakest settlement since July 13, a decline amplified by the expiration of the more expensive September contract on Friday. The transition to October futures—which began trading as the front-month—added downward pressure, with October Brent prices falling 4.7 percent from their Friday closing level. Read also: 1LINK Board Sets Stage for Pakistan's Digital Payment Growth Background The price drop reflects a significant shift in geopolitical risk perception. Earlier tensions had built as markets braced for potential US military action against Iran, which would have threatened shipping lanes and regional supply infrastructure in the Gulf. Trump's decision to hold off on an attack signals a preference for negotiation over escalation. A successful deal could bring additional Iranian barrels to market, adding to an already well-supplied global oil balance. Why It Matters For consumers and businesses, the slide translates into cheaper fuel costs at a time when inflationary pressures remain a concern. For oil-producing nations, however, lower prices squeeze export revenues and could strain budget planning. The market's sensitivity to Washington's Iran policy underscores how geopolitical decisions—not just supply-demand fundamentals—continue to drive energy price volatility. What's Next Traders will now watch for concrete signs of progress in US-Iran negotiations. Any breakdown in talks could quickly reverse Monday's losses, while a successful agreement might push prices lower still as Gulf supply expands.