John Andreas Olsen is a colonel in the Royal Norwegian Air Force currently assigned to NATO headquarters. He is a professor at the Norwegian Institute for Defense Studies, a non-resident senior fellow of the Mitchell Institute for Aerospace Studies, and a fellow of the Royal Swedish Academy of War Sciences. Professor Olsen has published a series of books on airpower strategy and defense policy, lectured worldwide, and received several awards for his writings. His latest books include Airpower Reborn, Airpower Applied, and Routledge Handbook of Air Power.