Of course it was justified. Germany was trying to develop its "heavy water capabilities, TO MAKE AN ATOMIC BOMB, JET aircraft, program, plus V-1 and V-2 rockets. The raid helped stop this. The alternative, take a quickie Berlitz course in GERMAN and make Deutschland Auber Alus our national anthem. The Germans attacked Great Britain first!!!! I have relatives that lived through the "London Blitz". ASK THEM IF THIS RAID WAS JUSTIFIED!!!!!