More than 1,100 flights at 11 airports in Germany will be cancelled or delayed on Thursday due to a strike by airport security staff, according to the airport industry group ADV. An estimated 200,000 passengers will be affected by the delays or cancellations during the one-day strike, ADV said. Workers for private aviation security firms at 11 major airports in Germany have been called to strike by the labour union Verdi amid collective bargaining talks. The affected airports are Frankfurt, Hamburg, Bremen, Berlin, Leipzig, Düsseldorf, Cologne, Hanover, Stuttgart, Erfurt and Dresden. German ai…