Lufthansa warns European terror creating turbulence

German flag carrier Lufthansa warned Tuesday that recent terror attacks in Europe were having a "tangible impact" on business, with second-quarter profits down 17 percent. "The terrorist attacks in Europe and also the increasing political and economic uncertainties are having a tangible impact on passenger volumes," said chief executive Carsten Spohr. "The forward bookings, in particular for our long-haul services to Europe have declined significantly," added the CEO, predicting a "difficult" second half of the year.