The United States and its natural gas have been vital for Europe’s attempt to fill its gas storage ahead of this winter season. Yet record U.S. LNG exports have led to a surge in domestic gas prices. The boomerang is coming back. When President Joe Biden promised the European Union there would be enough natural gas for its winter, EU politicians rejoiced and doubled down on Russian sanctions. A few months later, EU gas storage is full ahead of schedule. Meanwhile, however, LNG prices have soared like an eagle, China is re-selling Russian…