Lufthansa Group expects the surge in jet fuel prices to cost it an additional $2 billion this year as the closure of the Strait of Hormuz “is leading to a shortage in kerosene supply and thus to a significant increase in kerosene prices,” Europe’s biggest airline said on Wednesday. Lufthansa expects strong summer travel numbers, but it warned that “At the same time, the current closure of the Strait of Hormuz is leading to a shortage in kerosene…