By Shariq Khan
NEW YORK, Sept 7 (Reuters) - Oil prices rose to a six-week high on Monday as Iran vowed to strike energy infrastructure across the Middle East in response to further U.S. attacks on its assets, the latest escalation in a conflict that has sharply reduced oil supply from the region.
Brent crude futures rose $1.03, or 1.1%, to settle at $97.31 a barrel, after hitting their highest point since July 24 at $98.06. Brent futures settled around 1:30 p.m. EDT (1730 GMT), about an hour earlier than their usual settlement time due to the Labor Day holiday in the United States.
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U.S. West Texas Intermediate crude, which will not settle on Monday due to the holiday, was up 1.3%, or $1.17, at $92.65 a barrel by 1:45 p.m. EDT. WTI futures earlier rose as high as $93.29, also the highest since July 24.
"Strike our assets and you get struck," Iranian Parliament Speaker Mohammad Baqer Qalibaf said on Monday, in what appeared to be a response to U.S. Defense Secretary Pete Hegseth's warning that Tehran's oil fleet was "defenseless".
The United States and Iran traded strikes on oil tankers and warships over the weekend, marking a major escalation of the war between the two countries that began when the U.S. and Israel struck Iran on February 28, maritime intelligence firm Marisks said.
"Commercial tankers are now being deliberately used as instruments of reciprocal economic pressure, substantially weakening the previous distinction between military confrontation and commercial shipping," Marisks said.
Brent rose around 8% last week and WTI gained nearly 10%, after the U.S. and Iran resumed attacks. The war has taken a heavy toll on global oil supply, forcing nations to burn through stockpiles to avoid deficits.
In the United States, the largest oil producer and consumer, inventories of gasoline and distillate fuel are substantially below year-ago and five-year seasonal averages, PVM Energy analysts noted.
"The current roundup indicates a slightly more dire picture than the last time we took stock a few weeks ago," they said.
Regional tensions were also heightened by Israeli strikes on a town in southern Lebanon that killed at least 12 people on Monday, according to the Lebanese health ministry, marking one of the deadliest days of bombardment in recent weeks.
Elsewhere in the Middle East, Saudi Aramco's Jazan oil refinery was attacked on Monday and damage was being ascertained, the Financial Times reported, citing two people with knowledge of the matter.
