Brent climbed to $107.80 Monday as U.S.-Iran talks collapsed and Hormuz disruptions revived a fresh war risk premium across crude markets. Oil prices surged over 2% Monday before falling back as stalled U.S.-Iran diplomacy and continuing disruptions in the Strait of Hormuz drove a fresh risk premium into crude markets, with Brent rising to $107.8 per barrel at 6:30 a.m. ET, and U.S. WTI... [2224 chars]