NEW YORK — Oil prices rose to more than a three-week high on Thursday after U.S. President Donald Trump warned of retaliation against nations supporting Iran, his latest attempt to resolve a war that has stranded millions of barrels of Middle Eastern oil. Brent crude futures were up $2.20, or 2.4 percent, to $93.82 a barrel at 11:36 a.m. EDT, while U.S. West Texas Intermediate crude futures for September rose $2.33 to $88.16 a barrel. Both benchmarks hit their highest prices since July 24 and gained for a fifth straight session. The September WTI contract expires later on Thursday. Trump on Wednesday threatened "economic warfare and isolation on an unprecedented scale" against Tehran, warning of consequences for any country that provided "any type of lifeline to Iran." U.S. Treasury Secretary Scott Bessent said he would hold a press conference on Monday "to talk about exactly what we're going to do." Thousands of people have been killed in the war, which began nearly six months ago when the U.S. and Israel launched military strikes on Iran. Tehran's blockade of the Strait of Hormuz an