Brent up 11 percent in 20 days to $105

Data showed Brent crude rose about 11 percent over the past 20 days, adding more than $10 a barrel to trade near $105 on Sept. 10.

Reaction pending.

US tensions with Iran lift Brent

Officials said rising tensions between the US and Iran have tightened perceptions of near-term supply risk and pushed prices higher. Data showed the move follows an August average near $85 a barrel, leaving Brent roughly $20 above that benchmark in recent trading.

The supply channel driving prices is not yet clarified in public statements; officials attributed the rally to geopolitical risk rather than a single reported disruption. Physical market indicators and freight rates will be key to confirming whether the price move reflects temporary risk premia or a lasting tightening of available crude.

If tensions persist through the rest of September, then the premium on Brent over lighter grades and regional differentials could widen, keeping headline oil prices elevated. If diplomatic or military pressures ease before Sept. 30, then some of the recent gains may reverse as risk premia fade.

Markets will monitor developments through Sept. 30 for signs of disruption to shipping or exports; that window will determine whether crude settles above $100 or returns toward August levels.