Lack of intelligence on new drone flights in Denmark 'disconcerting', expert says

Denmark’s military intelligence service said Thursday it had not been able to identify who was behind a series of drone flights over the country’s airports that triggered security fears. Speaking on FRANCE 24, Stefan Wolff, Professor of International Security at the University of Birmingham, says that ‘this is very much part of Russian tactics’ and that it is ‘disconcerting’ that such an operation would catch Western air defenses unawares.