Several drones reportedly paralysed air traffic for more than two hours at one of Scandinavia’s most important airports in what police believe could have been deliberate sabotage. Four drones of different sizes were spotted near Stockholm-Arlanda Airport from the tower shortly before 1 am on Monday (2300 GMT on Sunday), according to the TT news agency and several other Swedish media. The airport is Sweden’s largest. As a result, several flights had to be diverted, including those to Stockholm and Gothenburg. Some planes were even diverted to Finland and Copenhagen, according to the newspapers …