Europe’s benchmark natural gas prices were on track early on Friday for a 50% weekly jump—the biggest one-week surge since the energy crisis in the summer of 2023, as the Middle East war has cut off 20% of global LNG supply. The implied volatility in the Dutch TTF Natural Gas Futures, the benchmark for Europe’s gas trading, has surged fourfold since the beginning of the year and is at the highest in nearly three years, according to data compiled by Bloomberg. Early on Friday, the April…