Europe’s airline fuel supplies are in fresh peril at the height of the summer season. Renewed fighting in the Middle East risks choking off a vital trading route through the Bab al-Mandeb strait to the Suez Canal, as well as the Strait of Hormuz. The region’s distillate traders warn that the latest Mideast turmoil coincides with a parallel diesel supply crunch that threatens to slash previously booming Atlantic Basin jet fuel production.