Oil prices tumbled Tuesday as traders once again priced in a U.S.-Iran agreement before anyone had actually signed one. West Texas Intermediate was trading at $75.64 per barrel shortly before 2 p.m. ET, down $4.70, or 5.85%, while Brent had fallen $4.61 to $79.16. Both benchmarks touched three-week lows as hopes rose that an agreement could reopen the Strait of Hormuz. Treasury Secretary Scott Bessent said a deal could come Tuesday or Wednesday, while Secretary of State Marco Rubio said talks involving Iran and Oman had made progress. Qatar also…