A planned strike by German ground staff at the Lufthansa airline on Tuesday and Wednesday has already led to some flight cancellations beginning on Monday evening. Lufthansa has cancelled dozens of flights at its Frankfurt hub, according to the airport’s departure board. Flights within Europe in particular were cancelled, while major intercontinental connections to destinations such as Buenos Aires and Cape Town remained scheduled to take off on Monday. Lufthansa has warned of major cancellations on Tuesday and Wednesday, when the full strike by ground staff will hit the airline. Technical, lo…