The discount for U.S. crude futures versus Brent on Wednesday hit the widest in 11 years, as attacks on Middle Eastern oil infrastructure drove the global benchmark higher while rising supply in the U.S. set the stage for a jump in oil exports. The U.S-Israeli war on Iran has thrown global oil markets into turmoil, driving crude and fuel prices to multi-year highs as a key trade route has mostly closed and some energy output in the Middle East is shut. The surge in Brent relative to U.S. crude futures creates an arbitrage opportunity for traders looking to fetch a profit by moving oil to higher-priced markets.